Question

What is the right hand palm rule Class 12?

Answer 1

The Right Hand Palm Rule is a way to determine the direction of the force experienced by a current-carrying conductor placed in a magnetic field. This rule is mainly used to understand the relationship between magnetic fields, currents, and forces, and it is particularly useful in electromagnetism.

Here’s how it works:

Steps to use the Right Hand Palm Rule:

1. Position your right hand: Stretch out your right hand with the fingers extended and your thumb perpendicular to the fingers.
   

1. Direction of current: Point the fingers of your right hand in the direction of the electric current flowing through the conductor (from positive to negative).
   

1. Magnetic field: Now, orient your hand so that your palm faces in the direction of the magnetic field (you can use the magnetic field lines, which usually go from the North Pole to the South Pole of a magnet).
   

1. Force direction: Your thumb will now point in the direction of the force experienced by the conductor. The force will be perpendicular to both the direction of the current and the magnetic field.
   

Summary:

1. Fingers: Point in the direction of the current.
   

1. Palm: Faces the magnetic field.
   

1. Thumb: Points in the direction of the force on the conductor.
   

This rule is especially useful when dealing with motors or when studying the motion of current-carrying wires in magnetic fields.

Example:

If you have a straight wire carrying current, and you place it in a magnetic field:

1. If the current flows in the upward direction and the magnetic field is directed from left to right (horizontally), the right-hand palm rule will tell you the direction of the force on the wire. The force will be directed either into or out of the page, depending on the arrangement of the field and current.
   

It's a quick way to visualize how current, magnetic fields, and forces interact!