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(A) The area of the square frame is $A = l^2 = (0.2\,m)^2 = 0.04\,m^2$.According to Faraday's law of induction,the induced electromotive force $(EMF)$

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$4$

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(A) The area of the square frame is $A = l^2 = (0.2\,m)^2 = 0.04\,m^2$.According to Faraday's law of induction,the induced electromotive force $(EMF)$ is given by $E = -\frac{d\phi}{dt} = -A \frac{dB}{dt}$.Given that the magnetic field decreases at a constant rate,$\frac{dB}{dt} = -0.1\,T/s$.Substituting the values,$E = -(0.04\,m^2) 	imes (-0.1\,T/s) = 0.004\,V = 4\,mV$.The current $I$ is given by $I = \frac{E}{R} = \frac{4\,mV}{1\,\Omega} = 4\,mA$.

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