A rechargeable battery experiences two consecutive current intervals

PHYSICS · Subjective · CBSE · Physics · Current Electricity · Current Electricity

Problem

A rechargeable battery experiences two consecutive current intervals. For the first

10\,\text{s}

the current into the battery is

+3.0\,\text{A}

. For the next

15\,\text{s}

the current is

-2.0\,\text{A}

(negative sign indicates direction opposite to the first interval). State whether the net charge that enters the battery over the entire

25\,\text{s}

interval is positive, negative, or zero, and justify your answer with a brief calculation.