Question

Can someone tell me how we got this answer please like what rule should I use?

Answer 1

W = V Q energy = work / charge * charge

Q = I t charge = current * time

V = W / (I * t)

V = 3 * 10E8 J / (1.5 * 10E4 amps * 2 * 10E-4 sec)

V = 10^8 volts