A fully charged storage battery can deliver J of energy

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

Problem

A fully charged storage battery can deliver

5.4\times10^{5}\,

J of energy. It powers a lamp that draws 60 W. Approximately how long, in minutes, can the lamp glow before the battery is exhausted? (a)

90\,\text{min}

(b)

150\,\text{min}

(c)

250\,\text{min}

(d)

120\,\text{min}