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Q.

Is it true that the magnetic field near the centre and close to the axis of a long solenoid is relatively uniform?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
The magnetic field generated in the centre and at the solenoid's core is uniform. However, outside the solenoid, the magnetic field strength is far weaker. The magnetic field strength of a solenoid is proportional to the product of current flowing and the number of turns per unit length of the solenoid. Thus, the given statement is True.
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