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

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

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60796 Points
one year ago
Here, R = 20 Ω, i = 5 A, t = 3s Heat developed, H = I2 R t = 25 x 20 x 30 = 15,000 J = 1.5 x 104 J

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