Question

What is the voltage between two points if 1.2 J of energy are required to move 0.4 mC between the two points?

Answer 1

Answer:

3000V

Explanation:

we have the following:

Energy (is this case the energy comes from the work of moving the charge):

$E=1.2J$

charge:

$q=0.4mC=0.4x10^{-3}C$

And the formula to find the voltage between two points given the energy and the charge is:

$V=\frac{E}{q}$

substituting all the known values:

$V=\frac{1.2J}{0.4x10^{-3}C}=3000V$

the voltage needes is 3000 volts