Suppose the loop in Textual Exercise 4 is stationary but the current feeding the electromagnet that produces the magnetic field is gradually reduced so that the field decreases from its initial value of 0.3 T at the rate of `0.02Ts^(-1)` .If the cut is joined and the loop has a resistance of `1.6Omega` how much power is dissipated by the loop as heat ? What is the source of this power ?

Explanation

Here ν = 0.5 Hz, N =100, A = 0.1 `m^2` and B = 0.01 T. Employing Eq.
Eq. (6.21)
`epsi_0 = NBA (2pi v)`
`=100xx 0.01xx0.1xx2xx3.14xx0.5`
`=0.314V`
The maximum voltage is 0.314 V
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