Question

what is right handed screw rule?

Answer 1

The right hand screw rule can be used when a direction must be determined based upon a rotational direction, or vice versa. ... The axis is 'grasped' in the right hand, the fingers curl round in the direction of positive rotation and the thumb is orientated in the positive direction.

Answer 2

hold the wire with your right hand and point the thumb to the flow of current.the fingers will wrap around the conductor in the direction of the field lines of the magnetic fields.