A charged particle is moving in a uniform magnetic field in a circular path. The energy of the particle is doubled. The initial radius of the new circular path will be

Question

A charged particle is moving in a uniform magnetic field in a circular path. The energy of the particle is doubled. The initial radius of the new circular path will be, R 2, 2 R, 2 R, R 2

MARKS App · Accepted Answer

r = m v q B , r 2 = m 2 v 2 q 4 B 2 = 2 m ( KE ) q 2 B 2 r ∝ K E ⇒ r 2 r 1 = K E 2 K E 1 ⇒ r 2 = 2 KE 1 KE 1 R ⇒ r 2 = 2 R

Search any question & find its solution

Looking for more such questions to practice?