Question

Inside a current carrying solenoid the magnetic lines of force are:

A. circular and do not intersect.

B. along the axis of the solenoid and parallel to each other.

C. perpendicular to the axis of the solenoid.

D. none of these

Answer 1

An ideal solenoid acts like a wire but it is round in shape and if we look at its each turn one at a time, we will get the direction of magnetic field using right-hand thumb rule. Each circle has magnetic field passing along its axis when we look inside it.