Question

Which of the following diagram is correct for the direction of magnetic force on a charge moving in uniform magnetic field ?​

Answer 1

The correct diagram among the above options for the direction of magnetic force on a charge moving in uniform magnetic field is

OPTION . (a).

Justification for the above statement:

• Magnetic force is the force of attraction or repulsion between two differently charged particles because of their motion/movementThe force exerted on moving charge around the magnetic field and electric field is known as Lorentz force.
• F = qE + qv × B.

Here, F is the force, q is the charge of particles ,E is the electric field, v is the velocity and B is the magnetic field.

• In the above correct diagram(option a.), the direction of the magnetic force F is indicated perpendicular to the plane that is formed by v and magnetic field B. This is explained by the method of right hand rule.
• Right hand rule:. It says that for determining magnetic force of a positively charged particle , put your right thumb in the direction of Velocity v , index finger in the the direction of magnetic field B and middle finger in the direction of magnetic force F.
• Equation used for the magnetic force of a moving particle is F= qvB sin theta