# A charge of #4 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #32 J# to #9 J#, what is the voltage between points A and B?

##### 1 Answer

Jan 19, 2016

#### Answer:

A volt is defined as a joule per coulomb,

#### Explanation:

A volt is a unit of electric potential. A joule is a measure of electric potential energy. A volt is defined as a joule per coulomb: if 1 coulomb

In this case

(Note: The question is phrased imprecisely, since 'electric potential' should be measured in volt and 'electric potential' energy in joule)