Question

who give the right hand thum rule​

Answer 1

Explanation:

Right hand thumb rule was established by Fleming to find the direction of magnetic field produced by straight current carrying conductor.

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Answer 2

physicist John Ambrose
In mathematics and physics, the right-hand rule is a common mnemonic for understanding notation conventions for vectors in 3 dimensions. It was invented for use in electromagnetism by British physicist John Ambrose Fleming in the late 19th century.