Physics, asked by likhitha14, 1 year ago

heat produced in a conductor of resistance 4.2 ohm with 10A current is _____cal/sec.

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Answered by Rosedowson
24
Hi..
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Answered by talasilavijaya
2

Answer:

Heat produced in a conductor is 100cal/sec

Explanation:

Given the resistance of a conductor,  R= 4.2\Omega

And the current flow through the conductor, I= 10A

Heat produced in a conductor is directly proportional to the square of magnitude of current, resistance of conductor and time of current flow.

Mathematically, it can be written as H=I^{2}Rt

Heat produced in a conductor per unit time, H=(10)^{2}\times 4.2

=100 \times4.2

=420 J/sec

Since 4.186 joules is equal to one calorie,

therefore 420J=\frac{420}{4.186} \approx 100cal

Therefore heat produced in a conductor in cal/sec is 100cal/sec

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