A car battery with a 12-V emf and an internal resistance of 0.075 Ω is being charged with a current of 66 A. Note that in this process, the battery is being charged. (a) What is the potential difference across its terminals A and B? (b) At which rate is thermal energy being dissipated in the battery?
16.875volts and 4.875W
12volts and 720W
7.05volts and 326.7W
7.125volts and 316.875W