How much electrical energy in joules does a 100 watt lamp consume:
(a) in 1 second?
(b) in 1 minute?

Power of the electric lamp $P=100\ Watt$

(a). When the lamp is lit up for $1\ s$

Then, electrical energy consumed $=Power\times time$

$=100\ Watt\times1\ s$

$=100\ Joule$

Therefore, energy consumed by the lamp in $1\ s$ is $100\ W$.

(b). When the lamp is lit for $1\ minute(60\ s)$

Therefore, energy consumed $=power\times time$

$=100\ Watt\times 60\ s$

$=6000\ Joule$

Therefore, the electric lamp consumed $6000\ Joule$ in one minute.

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Updated on: 10-Oct-2022

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