Along vertical wire carries a steady 7 A current. A pair of rails are horizontal

Question

Along vertical wire carries a steady 7 A current. A pair of rails are horizontal and are 0.1 m apart. A 11.5 Ohm resistor connects points a and b, at the end of the rails. A bar is in contact with the rails, and is moved by an external force with a constant velocity of 0.6 m/s as shown. The bar and the rails have negligible resistance. At a given instant t_1, the bar is 0.19 m from the wire, as shown. In Figure, at time t_1, the induced current in mu A is: Express the answer with three decimal places.

Explanation / Answer

I = uo*L*I*v/(2pi * R * x )

I = 2 x 10^-7 x 0.1 x 7 x 0.6 / ( 11.5 x 0.19)

I = 3.84 x 10^-7 A

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