A portable battery pack stores of energy when fully charged

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A portable battery pack stores

1.8\,\text{kWh}

of energy when fully charged. What is the maximum average power that can be delivered to a load so that the pack lasts exactly

6\,\text{h}

? (Assume no energy losses.) (a)

600\,\text{W}

(b)

300\,\text{W}

(c)

1080\,\text{W}

(d)

150\,\text{W}