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An electric iron a, resistance 20 Ω takes a current of 5 A Calculate the heat developed in 30 s.

An electric iron a, resistance 20 Ω takes a current of 5 A Calculate the heat developed in 30 s.

Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5964 Points
one year ago
Dear Student


Resistance of the iron = 20 ohm
Current = 5 amp
Time = 30 seconds
Heat produced = I2RT
= 52 × 20 × 30
= 15000 joules or 15 KJ

Thanks

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