Question

Find the heat produced when a current of 0.5 A is passed through a coil of resistance 200Ω for 5 minutes *

Answer 1

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given :-

I = 0.5A

R = 200ohm

time = 5min =5×60 = 300seconds

now we need to find heat produced in coil..

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using joule's law of heating..

according to joule's law of heating given by the formula H = I²Rt

it is clear that..heat produced in a conductor is directly proportional to :-

i) square of current (I)

ii) resistance of conductor (R)

iii) time(t) for which current is passed

now come to our question

so by using formula H = I²Rt

$h = {(0.5)}^{2} \times 200 \times 300 \\ \implies \: h = 0.25 \times 60000 \\ \implies \: h = 15000$

hence, heat producing in the coil is 15,000 joule

Answer 2

ABOVE ANSWER IS CORRECT