PhysicsMedium251×since 2002Q7538A source supplies heat to a system at the rate of 1000 W1000 \mathrm{~W}1000 W. If the system performs work at a rate of 200 W200 \mathrm{~W}200 W. The rate at which internal energy of the system increases isA600 WB1200 WC500 WD800 WCheck answerSkip