Grade 12th pass10 grade science
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.
1 Answer
Pawan Prajapati
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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