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Force on a Finite Wire

A uniform but...

Question

A uniform but increasing with time magnetic field exists in a cylindrical region. The direction of force on an electron at $P$ is

A

towards right

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B

towards left

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C

into plane of paper

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D

out of the plane of paper

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Solution

The correct option is A towards right
Lenz's Law
If an induced current flows, its direction is always such that it will oppose the change which produced it.
If the Magnetic field is increasing, the induced current will be in the anti-clockwise direction to oppose the change
since the movement of electron is opposite to the current, it moves towards right

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