Question

State right- hand thumb rule

Answer 1

Explanation:

When electricity (conventional current) flows in a long straight wire it creates a circular or cylindrical magnetic field around the wire according to the right-hand rule. ... If the fingers of the right hand are curled in the direction of the circular component of the current, the right thumb points to the north pole.

Answer 2

Thumb rules state that if thumb of the right hand points along direction of current, then the remaining curled , fingers of same hand gives the direction of the magnetic field due to the current

Take a wire which is carrying current in the right hand, then the thumb points the current direction and all other fingers surrounding the wire give the magnetic field direction due to the current