Question

explain right hand thumb rule.....​

Answer 1

Answer:

if the thumb, the forefinger, and the middle finger of the right hand are bent at right angles to one another with the thumb pointed in the direction of motion of a conductor relative to a magnetic field and the forefinger in the direction of the field, then the middle finger will point in the direction of the induced electromotive force

Answer 2

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Right hand thumb rule:

This is a rule created by Maxwell used to find the direction of magnetic field if the direction of current is given. The main motive of this rule is to remember the direction of magnetic field.

Let's understand this rule!

Imagine to hold a current carrying conductor in your right hand such that your thumb will point in the direction of flow of current, then the direction of magnetic field lines will be given by the curled fingers around the conductor. This is called right hand thumb rule.

$\pmb{\bf Note\longrightarrow}\textsf{ This rule is also called Maxwell's corkscrew rule. If we consider ourselves }\\\textsf{driving a corkscrew,in the direction of current, then the direction of the corkscrew}\\\textsf{is the direction of the magnetic field.}$

Diagram attached for better understanding!!