Question

Calculate the amount of heat generated in a conductor carrying current, when a current of 2A flows for 1 minute through a resistance of 200 Ω (Given J=4200 J/kcal) *

2 points

1.142 k.cal

22.84 k.cal

11.42 k.cal

114.2 k.cal

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Answer 1

Answer:

The heat generated in a conductor = 11.42kcal.

Explanation:

The current in the conductor = 2A.

The time of current flowing through the conductor = 60sec.

The value of the resistance of the conductor = 200Ω.

By the equation,

$H=I^{2}RT$

    = $2^{2}$×200×60

    = 48000J

    = 48000/4200kcal

    = 11.42kcal

So, the amount of heat generated in a conductor is equal to 11.42kcal.