State the faraday laws of electromagnetic induction, Physics

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a.  State the Faraday's laws of electromagnetic induction.

b.  A conducting circular loop is placed in an uniform magnetic field B=0.020 T with its plane perpendicular to the field. Somehow, the radius of the loop begins  shrinking at a constant rate of 1.0 mm/s. Determine the induced emf in the loop at an instant when the radius is 2 cm

 


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