Question

A solenoid of length $l$ and having $n$ turns carries a current $i$ in anticlockwise direction. The magnetic field is

• A. ${\mu }_{0}ni$
• B. ${\mu }_{0}ni/l$
• C. along the axis of solenoid
• D. perpendicular to the axis of coil

Answer 1

Answer: (B), (C), (D)

A solenoid of length $l$ and having $n$ turns carries a current $i$ in anticlockwise direction. The magnetic field is $\frac{{\mu }_{0}ni}{l}$. Its direction will be along the axis of solenoid and perpendicular to the axis of coil.