Which uses more energy, a 250 ,W TV set in 1 | vedclass

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Question

(A) Energy consumed by an electrical appliance is given by the formula, $H = P 	imes t$.For the $TV$ set:Power $(P)$ = $250 \,W$Time $(t)$ = $1 \,hr

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$250 \,W$ $TV$ set

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(A) Energy consumed by an electrical appliance is given by the formula, $H = P 	imes t$.For the $TV$ set:Power $(P)$ = $250 \,W$Time $(t)$ = $1 \,hr = 3600 \,s$Energy = $250 \,W 	imes 3600 \,s = 900,000 \,J = 9 	imes 10^5 \,J$.For the toaster:Power $(P)$ = $1200 \,W$Time $(t)$ = $10 \,minutes = 10 	imes 60 \,s = 600 \,s$Energy = $1200 \,W 	imes 600 \,s = 720,000 \,J = 7.2 	imes 10^5 \,J$.Comparing the two values, $9 	imes 10^5 \,J > 7.2 	imes 10^5 \,J$.Therefore, the $250 \,W$ $TV$ set consumes more energy.

Which uses more energy, a $250 \,W$ $TV$ set in $1 \,hr$ or a $1200 \,W$ toaster in $10$ minutes?

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