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Grade 10Electric Current

Temperature of a wire is increased by 3°C, when a current is passed in the wire for sometime. If the current is doubled , then by what amount will the temperature of wire increase during same interval of time.

Profile image of Sneha
8 Years agoGrade 10
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1 Answer

Profile image of Arun
8 Years ago
Dear Sneha
As we know
H = I² Rt
Hence
H1/H2 = (I1)²/(I2)²
H2/H1 = 4
Now
Theta proportional to H
Now
θ2/θ1 = H2/H1
θ2 = 4 * 3 = 12 °c
Regards
Arun (askIITians forum expert)

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