(Answered) A circular loop of wire with a radius of 40 cm is in a

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A circular loop of wire with a radius of 4.0 cm is in a uniform magnetic field of magnitude 0.060 T. The plane of the loop is perpendicular to the direction of the magnetic field. In a time interval of 0.50 s, the magnetic field changes to the opposite direction with a magnitude of 0.040 T. What is the magnitude of the average emf induced in the loop?

(a) 0.20 V

(b) 0.025 V

(d) 1.0 mV

(e) 0.20 mV

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