A ferromagnetic substance of volume 10 –3 m 3 is placed in an alternating field of 50 Hz. Area of hysteresis curve obtained is 0.1 M.K.S. unit. The heat produced due to energy loss per second in the substance will be
Text Solution
Verified by ExpertsThe correct answer is:
C
By using heat loss = VAnt ; whre V = volume = 10 –3 m 3 ;
A = Area = 0.1m 2 , n = frequency = 50 Hz and t = time = 1sec
Heat loss = 10 –3 × × 0.1 × × 50 × × 1 = 5 × × 10 –3 J = 1.19 × × 10 –3 cal
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