Question

An electric current of 2A passes through a coil of 10 ohm resistance for 10 minutes. Calculate the amount of heat produced

Answer 1

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Answer 2

Given that,

Electric current, I = 2 A

The resistance of the coil, R = 10 ohms

Time, t = 10 min

To find,

The amount of heat produced.

Solution,

The amount of heat produced in an electrical device is given by the formula as follows :

$H=I^2Rt$

t is time in seconds, t = 10 min = 600 seconds

So,

$H=2^2\times 10\times 600\\\\H=24000\ J\\\\H=24\ kJ$

So, 24 kJ of heat is produced. Hence, this is the required solution.