Question

Generally, right-hand rule is used when the velocity and magnetic field are

• A. independent of each other
• B. at 45° to each other
• C. parallel to each other
• D. perpendicular to each other

Answer 1

The Correct Option is D

The right-hand rule is applied to determine the direction of the magnetic force on a moving charge in a magnetic field. According to this rule, when the velocity vector and the magnetic field vector are perpendicular to each other, the force vector will be perpendicular to both. In the right-hand rule:

• The thumb represents the direction of velocity (v)
• The fingers represent the direction of magnetic field (B)
• The palm (or the direction of the force coming out of the palm) represents the direction of magnetic force (F)

This rule is valid when velocity and magnetic field are mutually perpendicular.

The correct option is (D): perpendicular to each other