Question

The slide generator in the ngre below is in อ uniform magnetic neid of magnitude 0.0500 T. The bar of length 0.345 m is puled at a c tant speed of .500 s. The U-shaped conductor and the have a resistivity of 2.7S x 10-8 Ω·m and a cross-sectional area of 8.50 x 10-4 m2. Find the current in the generator when x-0.670 m. (Note that the A in the image below is the area of the loop, not the cross-sectional area of the conductor and bar.) Bulb is unlit A. Bulb 鵰1

Answer 1

Emf, E = BLv

E = 0.5 x 0.05 x 0.345 = 0.0086 V

Resistance, R = (2.75 x 10^-8)(2 x 0.345 + 2 x 0.67)/(8.5 x 10^-4)

R = 6.57 x 10^-5 ohm

Current, I = E/R = 0.008y/(6.57 x 10^-5) = 131.2 A

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