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Question
Electric iron of resistance 20 ohm draws a current of 5 ampere.
Calculate the heat developed in 30 seconds .
My solution
H=I^2 Rt
H= (5^2 × 20 × (30÷3600))
H= 500×1÷120
Is it correct ??
Calculate the heat developed in 30 seconds .
My solution
H=I^2 Rt
H= (5^2 × 20 × (30÷3600))
H= 500×1÷120
Is it correct ??
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Solution
Slight wrong no need to divide with 3600
It is already in second
Remaining are true
So do without dividing with 3600
Final answer is 15000
5^2 *20*30=15000
It is already in second
Remaining are true
So do without dividing with 3600
Final answer is 15000
5^2 *20*30=15000
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