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Shows a wire sliding on two parallel, c...

Shows a wire sliding on two parallel, conducting rails placed at a separaton l. A magnetic feld B exists in a direction perpendicular to the plane of the rails. What force is necessary to keep the wire moving at a constatn velocity `v` ?

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Since `F_(magnetic =i//B`
`This force produces an acceleration of the wire.`
`Since the velocity is given to be constant.Hence net force acting on the wire must be zero.
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HC VERMA ENGLISH-ELECTROMAGNETIC INDUCTION-EXERCISE
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  2. A circular copper ring of radius r translates in its plane with a cons...

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  4. shows a long U shaped wire of widt l placed in a perpendicular magnet...

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  5. Consider the situation of the previous problem. (a) Calculate the forc...

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  8. Shows a metallic wire of resistance 0.20 Omega sliding on a horizontal...

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  9. A wire ab of length l, mass m and resistance R slided on a smooth, thi...

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  10. Consider the situation shown in figure. The wires P1Q1 and P2Q2 are ma...

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  11. Suppose the 19 Omega resistor of the previous problem is disconnected....

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  12. Consider the situation shown in . The wire PQ has a negligible resist...

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  13. The current generator I g, shown in . Sends a constant current I throu...

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  14. The current generator ig, shown in , sends a constant current I throu...

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  15. The system containing the rails and the wire of the previous problem i...

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  16. The rectangualr wire- frame, shown in has a width d, mass m, resist...

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  17. Shows a smooth pair of thick metallic rails connected across a battery...

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  18. A conducting wire ab of length l, resistance r and mass m starts slidi...

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