A) \[{{\mu }_{0}}nl\]
B) \[{{\mu }_{0}}\frac{nl}{{{l}^{2}}}\]
C) along the axis of solenoid
D) perpendicular to the axis of coil
Correct Answer: C
Solution :
(c) along the axis of solenoid A solenoid of length l and having n turns carries a current l in anticlockwise direction. The magnetic field as \[\frac{{{\mu }_{0}}nl}{l}\]. Its direction will be along the axis of solenoid.
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