A 4.00 cm slide wire moves outward with a speed of 100 m/s in a 1.00 T magnetic

Question

    A 4.00 cm slide wire moves outward with a speed of 100 m/s in a 1.00 T magnetic field. See the figure. At the instant that the circuit forms a 4.00 cm x 4.00 cm square, with R = 0.010 W on each side, what are the induced emf, the induced current, and the potential difference between the two ends of the wire?

A 4.00 cm slide wire moves outward with a speed of 100 m/s in a 1.00 T magnetic field. See the figure. At the instant that the circuit forms a 4.00 cm x 4.00 cm square, with R = 0.010 W on each side, what are the induced emf, the induced current, and the potential difference between the two ends of the wire?

Explanation / Answer

a.) Eind. = d(magnetic flux)/dt = d(B*A)/dt = 1*2*.04*100 = 8V

b.) resistance of the circuit at given instance, R = .04 ohm

I ind. = 8/.04 = 200A

c.) V = 8V

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