A car battery with a 12 v emf and an internal resistance of, Ask an Expert

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A car battery with a 12 V emf and an internal resistance of 0.040 is being charged with a current of 50 A.

(a) What is the potential difference V across its terminals

(b) What is the rate Pr of energy dissipation inside the battery?

(d) When the battery is used to supply 50 A to the starter motor, what is V?

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