Question

Define the 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 rule states that if thumb of the right hand points along the direction of current, then the remaining curled, fingers of same hand gives the direction of the magnetic field due to the current.

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