Answer:
3000V
Explanation:
we have the following:
Energy (is this case the energy comes from the work of moving the charge):
[tex]E=1.2J[/tex]
charge:
[tex]q=0.4mC=0.4x10^{-3}C[/tex]
And the formula to find the voltage between two points given the energy and the charge is:
[tex]V=\frac{E}{q}[/tex]
substituting all the known values:
[tex]V=\frac{1.2J}{0.4x10^{-3}C}=3000V[/tex]
the voltage needes is 3000 volts
