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An iron rod is subjected to cycles of ma...

An iron rod is subjected to cycles of magnetisation at the rate 50 Hz. Given the density of the rod is `8 xx 10^(3) kg//m^(3) and "specific heat is" 0.11 xx 10^(-3) cal//kg^(@)` C. The rise in temperature per minute, if the area inclosed by the B - H loop corresponds to energy of `10^(-2)` j, is : [Assume there is not radiation losses]

A

`78^(@)C`

B

`88^(@)C`

C

`8.1^(@)C`

D

none of these. '

Text Solution

Verified by Experts

The correct Answer is:
C
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