Question

an electric iron of resistance 20 ohm takes a current of 5A . calculate the heat developed in 30s.​

Answer 1

Answer:

HEAT(H) = i^2 RT

SINCE FROM GIVEN,

i= 5A

R=20ohm

T=30sec

so, H=25 x 20 x 30

so, H= 15000 joule

or you can write H= 15 kilo joule = 15 kj

Explanation:

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