Question

An electric iron of resistances 750 ohm is connected across a mains supply of 220V. Calc. The current through the element and the amount of heat energy is produced in joules in 10mins

Answer 1

Answer:

V=IR

I=220/750

I=0.33 A

H=I^2RT

H=0.3×0.3×750×10

H=675 joules

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