A charged particle of mass and charge moves with speed perpendicular to a uniform…

PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism

Problem

A charged particle of mass

m

and charge

q

moves with speed

v

perpendicular to a uniform magnetic field of magnitude

B

. Which one of the following expressions gives the radius

r

of its circular path? (a)

r=\dfrac{2mv}{qB}

(b)

r=\dfrac{mv}{qB}

(c)

r=\dfrac{mv}{2qB}

(d)

r=\dfrac{2\pi m v}{qB}