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A circular loop of radius 20 cm carries ...

A circular loop of radius 20 cm carries a current of 10 A. An electron crosses the plane of the loop with a speed of (` 2.0 xx (10^6) m s^-1). The direction of motion makes an angle of 30^@ with the axis of the circle and passes through its centre. Find the magnitude of the magnetic force on the electron at the instant it crosses the plane.

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