. Assertion:The magnetic field produced by a current carrying solenoid is independent of its length and cross-sectional area.

Reason:The magnetic field inside the solenoid is uniform

Ans || (b)

Solution ||| The magnetic field due to solenoid having n number of turns/metre and carrying current I is

It is obvious that magnetic field is independent of length and area.

Also, magnetic field is uniform inside the solenoid.

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