The strength of magnetic field inside a long current – carrying straight solenoid is

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Same at all points

More at the ends than at the centre

Found to increase from one end to the other

Minimum in the middle

answer is C.

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Detailed Solution

The magnetic field lines inside a long current – carrying straight solenoid are straight, equi spaced and parallel to the axis of the solenoid. As a result, the magnetic field inside the solenoid is uniform

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