Question

What is the direction of the current in the center of the coil carrying clockwise current?
No direction
Normal to the axis of the coil inwards
Along the axis of the coil inwards
Along the axis of the coil outwards

Answer 1

Hint: An induced current in the center of the coil has a direction such that the magnetic field due to the induced current opposes the change in the magnetic flux that induces the current.

Complete step by step answer:Whenever we come across force, magnetic field and current, we should remember the directions of them will be determined by the right hand rule. Here, the coil is carrying current and it will create a magnetic field inside it. So, we need to determine the direction of the force generated by both of them, which can be determined only by right hand rule.
When the current flows through the coil in the clockwise, then the magnetic lines of force inside or at center of the coil will be along the axis, which is in the perpendicular direction of the current in the coil.
The direction of the magnetic field would be inwards by the right hand rule.
So, to oppose this magnetic force the direction of the current flowing inside the coil will have direction outwards.
So, the direction of the current in the center of the coil carrying clockwise current will be along the axis of the coil and in the outward direction.

Note:The right hand rule states: if the thumb, the forefinger, and the middle finger of the right hand are bent at right angles to one another with the first finger pointed in the direction of motion of a magnetic field and the middle finger in the direction of the motion of the charged particle, then the thumb will point in the direction of the force.