Question

Explain fleming right hand thumb and left hand thumb rule......

Answer 1

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Fleming's Right-hand Rule (for generators) shows the direction of induced current when a conductor attached to a circuit moves in a magnetic field. ... The right hand is held with the thumb, index finger and middle finger mutually perpendicular to each other (atright angles), as shown in the diagram.
Fleming's left-hand rule for motors is one of a pair of visual mnemonics, the other being Fleming's right-hand rule (for generators). They were originated by John Ambrose Fleming, in the late 19th century, as a simple way of working out the direction of motion in an electric motor, or the direction of electric current in an electric generator.

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Answer 2

In flemings right hand rule we have to consider 3 right hand fingers centre finger , forefinger , and thumb which will be perpendicular to each other . Now the centre finger tells us the direction of induced current and forefinger tells us the direction of field then, thumb points towards the direction of applied force.