A conductiong bar of mass m is place on two long conducting rails a distance l a

Question

A conductiong bar of mass m is place on two long conducting rails a distance l apart. The rails are inclined at an angle ? with respect to the horizontal, and the bar is able to slide on the rails with negligible friction. The bar and rails are in a uniform and constant magnetic field of magnitude B oriented perpendicular to the incline. A resistor of resistance R connects the upper ends of the rails and completes the circuit as shown. The bar is released from rest at the top of the incline


(f) Suppose that the experiment is performed again, this time with a second identical resistor connecting the rails at the bottom of the incline. Will this affect the final speed attained by the bar, and if so, how? Justify your answer.

Explanation / Answer

No it does not effect the final speed attained by the bar since in both cases current in the bar is in same direction So the force on it remains same

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