In a magnetic field, a charge does not experience any force, then which of the following is not possible?

CONCEPT:

• Lorentz force: It is defined as the force exerted on a charged particle q moving with velocity v through an electric field E and magnetic field B.
• The entire electromagnetic force on the charged particle is called the Lorentz force and is given by

​⇒ FL = qE + qvBsinθ

• A charged particle experiences a force when it moves in a magnetic field.

​⇒ F = qvBsinθ

​​Where, F =  force due to magnetic field, q = magnitude of charge, v = velocity of charge, B = magnetic field, E = electric field and θ = angle between v and B

EXPLANATION:

• A charged particle experiences a force when it moves in a magnetic field.

​⇒ F = qvBsinθ     -----(1)

When the charge is at rest in a magnetic field,

⇒ v = 0 m/s

• A charge will not experience any force when the motion of charge ls parallel to a non-zero magnetic field,

⇒ θ = 0

• A charge will not experience any force when the motion of the charge is perpendicular to a non-zero magnetic field,

⇒ θ = 90°

• A charge will experience force. Hence, option 2 is correct.