What Is the Voltage Battery Reading Numbers on 2012 Chevrolet Silverado

Rik is an engineer who has held a range of marketing, technical support, and management roles. He is also a qualified teacher.

Welcome to your guide to the basics of electricity.

The four most basic physical quanities in electricity are:

• Voltage (Five)
• Electric current (I)
• Resistance (R)
• Power (P)

Each of these quantities are measured using different units:

• Voltage is measured in volts (V)
• Current is measured in amps (A)
• Resistance is measured in ohms (Ω)
• Ability is measured in watts (Due west)

Electric power, or the wattage of an electrical arrangement, is ever equal to the voltage multiplied past the current.

A system of water pipes is often used as an analogy to help people understand how these units of electricity work together. In this analogy, voltage is equivalent to h2o pressure, current is equivalent to flow rate and resistance is equivalent to pipe size.

In electrical engineering science, there is a basic equation that explains how voltage, current and resistance relate. This equation, written below, is known as Ohm's law.

Ohm's Law

5 = I 10 R

Ohm's constabulary states that voltage is equal to the current flowing in a circuit times the resistance of the circuit.

One fashion of understanding Ohm'southward law is to apply information technology to the imaginary plumbing system nosotros've employed every bit a representation of an electrical organization.

Let's say we take a tank of water attached to a hose. If we increase the pressure in the tank, more water will come out of the hose. Thus, if we increment the voltage in an electrical system, we will also increase the current.

If we brand the bore of the hose smaller, resistance will increase, causing less water to come out of the hose. Thus, if we increase the resistance in an electrical organization, we will decrease the current.

With this cursory introduction of the workings of an electrical organization, permit's leap into each of the units of electricity separately and learn about them in more detail.

Read More than From Owlcation

The image in a higher place depicts a uncomplicated electrical circuit with a bulb, some wire, and a bombardment.

What Are Volts?

Volts are the base unit used to measure Voltage. 1 volt is defined as the "difference in electrical potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points." The volt is named later on the Italian physicist Alessandro Volta.

In our battery diagram above, the battery provides what is known as a potential difference in an electrical circuit, or voltage. If nosotros go back to our water analogy, the battery is like a water pump that propels water through a pipe. The pump increases the pressure level in the pipe, causing the water to menstruation.

In electric engineering, we call this electrical force per unit area voltage and measure information technology in volts. A voltage of three volts can be written as 3V.

As the number of volts increases, the current increases as well. But in social club for the current to menstruation, the electric conductor or wire must loop back to the battery. If we interruption the circuit, with a switch for example, then no current will flow.

There are standard voltage outputs for everyday objects similar batteries and household outlets. In the United States, the standard voltage output for a household outlet is 120V. In Europe, the standard voltage output for a household outlet is 230V. Other standard voltage outputs are listed in the tabular array below.

Mutual Voltages

Object	Voltage
Single-prison cell, rechargeable bombardment	1.2V
Single-cell, non-rechargeable battery	ane.5V–1.56V
USB	5V
Auto battery	2.1V per jail cell
Electrical vehicle battery	400V
Household outlet (Nippon)	100V
Household outlet (N America)	120V
Household outlet (Europe, Asia, Africa, Australia)	230V
Rapid transit 3rd rail	600V–750V
High-voltage electric power lines	110,000V
Lightning	100,000,000V

What Are Amps?

The ampere, often shortened to "amp" or A, is the base unit of measurement of electric current in the International System of Units. Information technology is named after the French mathematician and physicist André-Marie Ampère, who is considered the father of electrodynamics.

Electricity consists of the flow of electrons through a conductor, for example, an electric wire or cable. We measure the rate of menstruum of electricity equally an current (merely every bit we call up of the rate of flow of water in a river as the river electric current). The letter of the alphabet used to stand for current in an equation is I.

Electric current is measured in Amperes, shortened to Amps or but the letter A.

A current of 2 Amps tin be written as 2A. The bigger the current the more than electricity is flowing.

The International Organisation of Units (SI) defines amps as follows:

"The ampere is that constant current which, if maintained in two direct parallel conductors of infinite length, of negligible round cross-section, and placed i metre apart in a vacuum, would produce betwixt these conductors a force equal to 2×10^−vii newtons per metre of length."

Electric Electric current Demonstration (Video)

What Are Ohms?

Ohms are the base unit of resistance in an electric organisation. The ohm is divers equally "an electrical resistance between 2 points of a usher when a constant potential difference of one volt, practical to these points, produces in the conductor a electric current of i ampere, the conductor not being the seat of any electromotive force." The ohm is named after the German physicist Georg Simon Ohm.

Resistance is measured in ohms, or Ω (omega), for short. Then, five ohms can be written 5Ω.

In our battery diagram in a higher place, if we remove the bulb and reconnected the wire so the battery was short circuited, the wire and battery would get very hot and the battery would soon be flat because at that place would be near no resistance in the circuit. Without any resistance, a huge electrical current would catamenia until the battery was empty.

One time we add a bulb to the circuit, resistance is created. There is now a local "blockage" (or narrowing of the pipe, per our h2o piping analogy) where the current experiences some resistance. This greatly reduces the current flowing in the circuit, so the energy in the bombardment is released more slowly.

As the battery forces the current through the bulb, the battery's energy is released in the bulb in the form of calorie-free and heat. In other words, the current carries stored energy from the battery to the bulb, where it is turned into low-cal and oestrus energy.

The image above shows a light bulb as the primary cause of electrical resistance.

What Are Watts?

A watt is the base unit of power in electric systems. Information technology can also exist used in mechanical systems. It measures how much free energy is released per second in a organisation. In our battery diagram, the size of both the voltage and the current in the bulb determine how much energy is released.

In the diagram above, the light bulb would go brighter as the power, measured in watts, increases.

We can calculate the power released in the bulb, and of the electric organisation as a whole, by multiplying the voltage past the current. Then, to calculate watts, the following formula is used.

How to Summate Watts

Westward = V * I

For example, a electric current of 2A flowing through a bulb with a voltage of 12V across it generates 24W of ability.

How to Calculate with Watts, Amps, Volts, and Ohms

If you want to do an electrical adding involving voltage, current, resistance, or ability, reference the formulae circle beneath. For case, we tin summate the ability in watts by referencing the yellow expanse in the circle.

This formulae circumvolve is very useful for many electrical engineering science tasks. Go along it handy the adjacent time you are dealing with an electrical organization.

Below are some example equations that are solved using the formulae.

Example Equations

i. What is the current in an electrical circuit with a voltage of 120V and 12Ω of resistance?

I = V/R

I = 120/12

I = 10A

The electric current in an electric circuit with a voltage of 120V and 12Ω of resistance is 10A.

two. What is the voltage across an electrical circuit with a electric current of 10A and 200Ω of resistance?

V = I 10 R

5 = 10 x 200

V = 2000V

The current in an electrical organisation with 10A and 200Ω of resistance is 2000V.

3. What is the resistance in an electric organization with a voltage of 230V and a current of 5A?

R = V/I

R = 230/five

R = 46Ω

The resistance in an electrical system with 230V and 50A is 46Ω.

Formulae circle for solving electrical unit of measurement equations.

In Determination

After reading this article, you lot hopefully have a better understanding of the divergence between electric electric current, voltage, resistance, and electrical ability. Remember that if yous know any two of the concrete values in the formulae circle and so you tin calculate each of the other ii unknown values.

Basic Electricity Tutorial (Video)

Electricity Quiz

For each question, cull the best answer. The answer cardinal is below.

1. If I connect a 120V supply to a 60W bulb, what current would period in the circuit?
   • 1A
   • 2A
   • 0.5A
   • 5A
2. If a 3V battery is continued to a bulb and a current of 1.5A flows through it and then what is the rating of the seedling?
   • 3W
   • 2W
   • iv.5W
   • 0.5W

Reply Key

1. 0.5A
2. 4.5W

Interpreting Your Score

If you got 0 correct answers: Mayhap you need to reread this article?

If you lot got 1 correct answer: Do you lot see where you went incorrect?

If you got 2 correct answers: Well washed. You certainly know Watt is Watt!

Questions & Answers

Question: What is the resistance of the heating element of an electric atomic number 26 if the ampere draw is 8 amperes when 115 volts are practical?

Reply: R= V/I = 115/8 = fourteen.4 Amps

Question: Tin can I run two appliances at the aforementioned time when the max amps available is 5A? One requires 3 amp, and the other requires four.15 amp.

Answer: The answer is no. The full current drawn is vii.15 Amps. This would overload a 5A socket, and result in a 5A fuse blowing or a 5A circuit breaker being triggered.

© 2009 Rik Ravado

Robert on May 26, 2020:

Very informative and helpful.

James Watt on April 23, 2020:

"and Watts are named afterward Scottish inventor and mathematician James Watt"

Dennis on April 09, 2020:

Very useful, insight

CR7 on March 24, 2020:

Blurry images

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brit on November 21, 2019:

cool

Branson on September 24, 2019:

I am trying to design a battery power led light strip. My question is if my led controller is 12v, what amperage 12v battery supply tin I use? 2A? 4A? 6A?

remlalnghaka on September 21, 2019:

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ubaid on July 31, 2019:

how much units will be comsumed past an electronic device of iii amps per hour

manivannan on July 18, 2019:

thaks to all informations

Ghulab hameed on May 15, 2019:

sir plz tell me how we know a device how many voltage applied and which condination volition be prove?

Krystal on May 14, 2019:

Trying to get the answer to this question can anybody help me please need if by the moring for school

1. Question:

I=.5amps,R=50phms,P=

Heidy on April 01, 2019:

cheers for explaining the basics of electricity. It make sense now

Asitya on March 20, 2019:

Dainty it's and so easy

COOPER IS Unproblematic on Feb 11, 2019:

Cooper said he's being uncomplicated but he's using highly unnecessary "big" words and it is stupidly simply abrasive.

robert cannon on January 21, 2019:

I don't care virtually small electrical quiz I what one question answered what gauge wire is needed to claw upwards a welder rated at 230 volts 220 amps as far as I got as it is with electricity is this high a amperage will kill you

Aamir on Jan 17, 2019:

very well explained.

yoyo on Nov 05, 2018:

cheers !..it was interesting.

Cooper on October 30, 2018:

And so we know plugging an extension into another extension (and having load beingness drawn from said setup) will (possibly) hit the maximum allowed Amperage/Wattage for that extension and burn it out...

Just we tin have multiple devices like Fridges, Freezers, Television receiver'southward, Irons, etc, etc... Each on their own "Plug Socket" merely aren't the Plug Sockets essentially just 'extensions' of the house Mains? -

Presuming my answer is probably bachelor on the house'due south Main Fuse Board?... I'grand curious to ask how i would calculate the Maximum Potential Amperage & Wattage load of one'south entire business firm!

I know I could add upwards all my devices and calculate 'My Specific Full Draw' merely how much further 'til I hitting the 'maximum for my residence'?

The answer is probably stupidly simple, but I'm being stupidly unproblematic at the moment so such an answer would be warranted :D

- Cooper

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It's very helpful to me for my studies.

Oh ya daddy on October 10, 2018:

Thanks helpful

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Very Interesting, thankyou!

hi babe on July 03, 2018:

very good and very helpful

Brunsrm on April 02, 2018:

Tin can I run ii appliances at the aforementioned time when the max electric provided is v amps? Ane requires 4.12 A and the other requires 3 A.

Thanks for your help

Taylor on March 27, 2018:

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pleas help me how empathise electricity ie wattage, volts and amps, how to increase amps & decrease in the circuit

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andrea Sherman on September 04, 2017:

I never understood how that worked. I nonetheless am sort of confused . isn't electricity measured in both particles and linear?. I took a class called physics for poets nearly twoscore years ago. give thanks you✌

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thks....

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Helps to understand fifty-fifty for mechanical students

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Thanks

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Overnice explanation

DILLI SAHU on Jan 22, 2017:

Thank yous Sir,

Nice northward simple explanation of current, volt and watt.

lavysay on January 05, 2017:

cool

Nancy Marine on October 03, 2016:

I got 2/2 of the question, I guess I know watt is watt.

ade on October 03, 2016:

astonishing, never been able to go this stuff in my Head and you've managed it so succinctly mate, thanks always then much, Cheers

jeo on September 16, 2016:

hi in that location, i am just getting to know about electricity. and has always been dislocated to hell, what is Amps, Volts etc. now i understood it all.

thanks for the commodity. God Bless

SAQIB from HYDERABAD PAKISTAN on January 29, 2015:

Being engineer myself I enjoyed reading the concepts.

sanjay on December nineteen, 2014:

Very good

MARJ WATSON on July 26, 2014:

Please advise this old lady if I can use Gu10 replacement bulbs with 110/220 in the uk, equally I bought them in error, thanking you in anticipation,

Marj

Someone on March 08, 2014:

That was useful thank you

santosh kumar on January xx, 2014:

Thanks a lot for your wonderful particular explainatin. I hope information technology would be very helpful to all beginers. Best wishes for your weblog.

Alpo on January 05, 2014:

Thanks for the tutorial...it has been awhile and was looking for the basic equations. Co-ordinate to your article, "A" is short for amperes or amps. After, "I" is introduced without relating information technology to amps. For clarity, yous might add that.

vikas pal on September 10, 2013:

great web log

Alex on May 22, 2013:

Can someone help to detect out 12 volt ??? w required in the given satiation?

I required 220 volt 1000 w to run my application. i am planning to install solar panel to accept full fill my requirement. it involve solar panel ,12 volt bombardment, and power inverter, how many watts of 12 volt panel exercise i required to accept 220 volt 1000w power to run my application

Rusty on Apr 09, 2013:

I found it interesting that elkangorito said no manner 120 is safer than 230 volts. Then why in England on ALL commercial work sites the max voltage used is 120? Everything is stepped down from 230 to 120.

Thank you

Kiran Chandran on October 04, 2012:

I had cleared many doubts by using this........

amped on July 17, 2012:

Very useful explanation.

saratchandra on May 25, 2012:

Expert explanation with examples

ajay on April xvi, 2012:

thanks for the answer. sir please give one more reply well-nigh transformers. I read somewhere that transformers tin can increase and decrease the voltage of a said line, and then in that case is it possible to decrease the incomming 220v main line of my house to say 24v and then again increase information technology 220v for normal usage. will the performance be the same and volition it decrease the electric bill.

Rik Ravado (author) from England on April fourteen, 2012:

ajay - the maximum current would depend on the fuse or breaker in the excursion. In theory, if you short circuited the 120v you could get an infinite current but domestic supplies normally have a breaker that trips if yous describe besides much current. In the Uk, our domestic circuits typically allow you to draw nearly 13A from a 3 pivot plug but information technology my exist higher elsewhere, for instance the U.s..

ajay on April fourteen, 2012:

how practise nosotros determine the maximum limit of ampereage that can be drawn out of a 120 volts line

Ak on Dec 28, 2011:

Thank you for the heads-upwardly Rik. I want to implement inexpensive renewable energy, could you outline few options? Pv or solar panels are not the options where i alive. I heard a lot about fuel cells, are they expensive?

Rik Ravado (author) from England on December 22, 2011:

Ak - These products are all scams. Y'all don't get electrical energy for zip. You lot can convert mechanical free energy into electrical energy, a generator does this. Only yous still accept to put the same amount of energy in. Scammers sometimes talk about perpetual motion in connection with free free energy but it doesn't exist.

Ak on December 21, 2011:

I take a question.. Tin can the magnetic free energy be converted to electric enegergy somehow by properly placing them on a flywheel? Rotating the flywheel using the magnetic strength. There are lot of things going on the spider web about it. And how come they just sell guides only not the finished product.

Ak on December 21, 2011:

Articulate equally crystal

Robert on December 18, 2011:

First, thanks does not say enough for this. I am a ho-hum learner and forward to using this to help learn nearly electricity. I am finding out that it is not that difficult, but like Bert Chiliad commented, U+P=R. Thank you again so much Mr. Ravado

Rik Ravado (author) from England on November 11, 2011:

Brett

Well spotted - I hold. (Changed the graphic) Thanks!

Brett on November 10, 2011:

Shouldn't your graphic read I = sqrt(P) / R instead of I = sqrt(P) / V?

Rik Ravado (author) from England on March 12, 2011:

Cheers for the feedback Bert - yous are so right with U+P=R.

Learning is much more effective when you put what you have learned into practise!

bert k on March 12, 2011:

cheers for the complimentary lesson. you made it very clear and easy to empathise. here is a smart formula i'd similar to pass on to beginners like myself. U+P=R or utilization plus practice equals retention. i wish there had been net and google when i was a kid. all-time regards teach. bk

topquark from United kingdom on February 07, 2011:

Useful and well-presented article! A lot of people seem to become dislocated about Watts and Amps and Volts - an explanation like this has been long overdue.

bernie on October 12, 2010:

Everyones a cridic. I understood completely and I understood that information technology is non on the money, and those of the states who don't have to deed like know information technology all'due south realize that there are factors involved that makes the math close, merely there is room for fault. Mayhap thicknees of the wire being used, battery losing power, or any the reason. People arctic!!! If I understood and realise this then you lot brain childeren should. Anal Bastards.

Kevin on October 03, 2010:

Thanks for this mate.

Helped a lot with my schoolwork. :P

Rik Ravado (writer) from England on June 09, 2010:

Thank you Peter!

Peter Enmore on June 08, 2010:

Yeah, you actually tin can't get the calculation it to an exact. Merely y'all tin definitely become an gauge.

Rik Ravado (author) from England on Feb 06, 2010:

Elk

Thanks for your comments - I still maintain 120v is safer than 230v. In other words the lower the voltage, the less current potentially flows through the victim.

I concur with your 'approximately' as evidently cablevision and other elements in the circuit volition farther lower the current. Also the rating of the bulb or other apparatus will non be precise and there will be a margin of error.

Thanks for stopping by and commenting!

elkangorito from Thailand on February 06, 2010:

Fifty-fifty though your blog is an first-class "guide to the nuts of electricity", there are a couple of things that need to be considered:

You said, "In the United states of america, the domestic supply is typically 110V, much safer than the UK."

This is not true.

Firstly, the voltage in the Britain is officially 230v (single stage, domestic).

Secondly, the voltage in the USA is 120v (domestic).

120v is in no way "safer" than 230v. A "safe" voltage is considered to be less than 50v RMS (Air conditioning) or 120v DC (ripple free). These voltages are known as "extra low voltages" & relate to "touch voltage limits".

You besides said: "Finally, remember that if you know the voltage of your ability supply then you can calculate the electric current through a bulb, fuse or other electric appliance or component, based on its rating in Watts."

I think that yous meant to say, "Finally, remember that if you lot know the voltage of your power supply then you lot can APPROXIMATELY calculate the current through a bulb, fuse or other electrical appliance or component, based on its rating in Watts."

Rik Ravado (author) from England on November 04, 2009:

LiamBean - glad you found it helpful!

LiamBean from Los Angeles, Calilfornia on October 23, 2009:

Lovely. Wonderful explanation of Watts, Amps, and Current.

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