A charge of $12 C$ is passing through points A and B on a circuit. If the charge's electric potential changes from $70 J$ to $34 J$ , what is the voltage between points A and B?

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Answer 1 · 2017-07-20T16:05:50

Lets see what information we have :
Charge (C) $=12C$
At $color(blue)A$ , eletric potential energy ( $E$ ) $=70J$
At $color(red)B$ , electric potential energy ( $E$ ) $=34J$
Change in $E$ $=70J-34J$ $=36J$
Formula relating those informations $rarr$ $color(green)E=$ Charge (C) $*$ potential difference (V)
Therefore,
$E=C*V$
$36=12V$
$12V=36$
$V=36/12$ $=3V$ $larr$

A charge of 12 C12 C is passing through points A and B on a circuit. If the charge's electric potential changes from 70 J70 J to 34 J34 J, what is the voltage between points A and B?