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Fleming Right Hand Rule

When a moving conductor is placed inside a magnetic field, due to the motion of the conductor, current will be induced in it and there exists a directional relationship between the current induced in the conductor and the direction of the force applied inside the magnetic field. Fleming right-hand rule gives this relation between these directions.

History

Fleming right-hand rule was originally developed by an English electrical engineer, John Ambrose Fleming, in the late 19th century. 

The Right-hand rule uses the Thumb, the index finger, and the middle finger of the left hand.

Statement & Definition

Fleming Right Hand Rule
A drawing of a right hand illustrating Fleming’s right hand rule (Source)

Fleming’s right hand rule definition can be stated as:

A right hand is stretched such that the Thumb, middle finger, and index finger make an angle of 90 degrees to each other. Then,

Thumb represents the direction of Motion or Force(F).

The Middle finger represents the direction of the current (I).

The Index finger represents the direction of the Magnetic field(B).

Related: Fleming Left Hand Rule

Application

Fleming’s right hand rule helps us determine the induced current direction in a conductor moving perpendicular to a magnetic field.

FAQs

What is Fleming Right-Hand Rule?

A right hand is stretched such that the thumb, middle finger, and index finger make an angle of 90 degrees to each other.
Then, the thumb shows the direction of Force, the Middle finger indicates the direction of the current, and the index finger shows the direction of the magnetic field.

Which Rule did Fleming find?

In the late 19th Century, Fleming discovered both Fleming’s Left-hand and Right-hand rule.

What does the index Finger represent in the right-hand rule?

The Index finger represents the direction of the Magnetic field(B).

On what is Fleming’s Right-hand rule applied?

Fleming’s Right-hand rule is applied to the conductor moving in a magnetic field.

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