An electric iron of resistance 20ohm take a current 5A .Calculate the heat develops in 30s?
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Answered by
27
Your answer is ----
Given, resistance R = 20ohm
current I = 5A & time T = 30s
Therefore ,
according to joules law of heating
H = I^2 × R × T
=> H = 5^2 × 20 × 30
=> H = 25 × 600
=> H = 15000 joules
Hope it helps you
Given, resistance R = 20ohm
current I = 5A & time T = 30s
Therefore ,
according to joules law of heating
H = I^2 × R × T
=> H = 5^2 × 20 × 30
=> H = 25 × 600
=> H = 15000 joules
Hope it helps you
Answered by
6
hope it helps u........
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