Q.

The strength of the magnetic field inside a current-carrying solenoid is :

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a

Minimum at the centre 

b

Same at all points

c

Maximum at the centre 

d

Maximum at centre and minimum at corners

answer is C.

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Detailed Solution

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We can see that magnetic lines are equidistant inside the solenoid.
That means the strength of the magnetic field inside a solenoid is uniform.

Therefore, the strength of the magnetic field inside a solenoid is the same at all points.

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