Question

What is the direction of magnetic field at the centre of a coil carrying current in a clockwise direction?

• A. Along the axis of coil inwards
• B. Along the axis of coil outwards
• C. Perpendicular to the axis of coil inwards
• D. Perpendicular to the axis of coil outwards

Answer 1

The correct option is A Along the axis of coil inwards

When a current passes through coil, the direction of magnetic field at center is along the axis of coil. At the other points of coil inside and beyond the magnetic field is small and appears to diverge.
When the current flows through the solenoid in the clockwise direction, then the magnetic lines of force inside or at center of the coil will be along the axis inwards according to right hand thumb rule.