If a heater of $100 Ω$ resistance draws a current of 5 A for an hour then find the energy consumed by the heater.

3600 kJ

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9000 kJ

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2500 kJ

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1800 kJ

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Solution

The correct option is B
9000 kJ

Heat generated $H = I^{2} R t$
$I = 5 A, R = 100 O h m t = 1 \times 60 \times 60 s e c o n d s H = 25 \times 100 \times 3600 J = 9 \times 10^{6} J o u l e s H = 9000 k J$

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Similar questions

If a heater of $100 Ω$ resistance draws a current of 5A for an hour then find the energy consumed by the heater.

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