Question

what is the p.d (potential difference) of a battery that supplies 4 amperes when a wire of 3 ohms resistance is connected across it

Answer 1

Answer:

force ε: the increase in potential energy per unit charge provided by the chemical reactions in the battery. And the voltage difference across the light bulb is ∆V = I R = (0.06 A)(20 Ω) = 1.2 V ▪If we measure the voltage difference across the battery or the light bulb, we will get 1.2 V.