Question

what is right hand thumb rule

Answer 1

The direction of the cross product may be found by application of the right hand ruleas follows: The index finger points in the direction of the velocity vector v. The middle finger points in the direction of the magnetic field vector B. The thumb points in the direction of the cross product F.

Answer 2

Answer:

right hand thumb rule is the way to find the direction of magnetic field around a current carrying conductor.

according to this rule,

if we hold the straight current carrying conductor in our right hand such that the thumb point the direction of current then the remaining curled fingers indicate the direction of magnetic field around the conductor

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