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Heating Effect of Current

A heating coi...

Question

A heating coil has a resistance of $200 Ω$ . At what rate will heat be produced in it when a current of 2.5 A flows through it?

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Solution

Power = $I^{2} R$

= $2.5 \times 2.5 \times 200$ = 1250 W

= 1250 J / s

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