Science, asked by Anonymous, 1 year ago

an electric iron resistance 20 ohm resistance of the Year equals to 20 ohm take a current of 5 ampere then the heat developed in 30 seconds will be
a) 1500 ohm
b) 15000 joules
c) 1500 joules
d) 150 ohm

Answers

Answered by DSamrat

4

as H=I^2Rt
so, heat =5×5×20×30=15000 joules

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