The energy given out by a 60watt bulb in 30 minutes is a)900joule b)30watt hour c)1108000j?

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Answer 1 · 2018-01-17T06:14:37

The answer is option #(b)=30Wh#

The energy is

#"Energy(J)"="Power(W)"xx "Time(s)"#

#E=Pxxt#

The power is #P=60W#

The time is #t=30xx60=1800s#

The energy is

#E=60xx1800=108000J#

Energy is also,

#E=60xx(30/60)=30Wh#