Grade 12th pass10 grade science
An electric iron of resistance 20 Q takes a current of 5 A. Calculate the heat developed in 30 s.
An electric iron of resistance 20 Q takes a current of 5 A. Calculate the heat developed in 30 s.
1 Answer
Pawan Prajapati
Given R = 20 Ω, I = 5 A, t = 30 s
H = I2Rt = (5)2 x 20 x 30 = 15000 J = 1.5 x 104 J
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