nomor 2 dan 3? toling dibantu

2. q = 2 x 10^-4 C
V = 25 Volt
W = V x q = 25 x 2 x 10^-4 = 5 x 10^-3 joule

3. q = 5 x 10^-5 C
W = 2,5 x 10^-4 joule
W = V x q
V = W / q = (2,5 x 10^-4)/(5x10^-5) = 5 Volt