An electric heater’s power output increases uniformly from 0 W at to W at s as it warms up

PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity

Problem

An electric heater’s power output increases uniformly from 0 W at

t=0

1.20\times10^{3}

W at

t=60

s as it warms up. How much energy does the heater transfer to its surroundings during this 60 s interval? (a)

1.80\times10^{4}\,\text{J}

(b)

7.20\times10^{4}\,\text{J}

(c)

3.60\times10^{4}\,\text{J}

(d)

3.60\times10^{3}\,\text{J}