# Colombs,Amps,Volts,and Watts. HELP

• Mattius_

#### Mattius_

Colombs,Amps,Volts,and Watts. HELP!

## Homework Statement

A given car battery is rated at 250 amp-hours. Does this rating indicate the amount of energy, power, charge, voltage, or current that can be drawn from the battery? Explain.

## Homework Equations

Coulombs, Amps, Volts, Watts.

## The Attempt at a Solution

I first calculated the coulombs that this battery produces in one hour. That turned out to be 250amp-hours X 3600seconds= 900,000.

Is this the furthest that I can get?? I am really stumped because I thought I could get more than just the number of coulombs. I tried finding out how many electrons pass through (2.25x10^22) but it seems like I cannot learn joules or voltage by knowing how many total electrons a battery is capable of dispensing.

I guess my problem is that I am equating the total number of electrons as a sort of total amount of energy. This is wrong? Your calculation has the right dimensions and is correct. But the 3600 is not seconds, it's just a number to convert the hours to seconds.

Amp-hours is charge because amp=Coulomb/s.