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Standard XII

Physics

Towards Biot-Savart Law

A current car...

Question

A current carrying ring is placed in a horizontal plane. A charged particle is dropped along the axis of the ring to fall under the influence of gravity.

the current in the ring may increase

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the current in the ring may decrease

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the velocity of the particle will increase till it reaches the centre of the ring

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the acceleration of the particle will decrease continuously till it reaches the centre of the ring

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Solution

The correct option is C the velocity of the particle will increase till it reaches the centre of the ring
Magnetic field of ring is also along its axis or in the direction of velocity of charged particle.
Hence no magnetic force will act on charged particle.
But due to $g$ velocity of charge particle will increase.

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