devarshi-dt-logo

Question:

An uncharged particle is moving with a velocity of →v in a non-uniform magnetic field as shown. Velocity →v would be: maximum at A and B; same at all points; maximum at M; minimum at A and B

same at all points

maximum at M

maximum at A and B

minimum at A and B

Solution:

Magnetic force →Fm=q(→v×→B)
The particle being uncharged, q=0. So, magnetic force on the particle, →Fm=→0
Since there is no external force acting on the particle, its velocity →v will be same at all points.