Question

If F1 and F2 are magnetic forces acting on alpha particle and an electron respectively, when moving perpendicular to magnetic field then:

a) F1 = F2
b) F1 > F2
c) F1 < F2
d) F1 = 4(F2)​

Answer 1

F1 is smaller than F2

c): is the correct option

Answer 2

Answer:

F1 > F2

Explanation:

The alpha particle has twice the charge of the electron.

The force on particle having charge q, moving with the velocity of v in a magnetic field having strength B is given by the  F = q (v x B).

For alpha the magnetic force will be higher since it has higher charge.

F1 - Magnetic force on alpha

F2 - Magnetic force on elecron

So, F1 > F2