Physics - Magnetism Question with Solution | TestHub
A charged particle having non-zero velocity is subjected to certain conditions given in List-I. List-II gives possible trajectories of the particle. Match the conditions in List-I with results in List-II.
List-I | List-II |
|---|---|
(I) In only uniform electric field | (P) The path may be a straight line |
(II) In only uniform magnetic field | (Q) The path may be a parabola |
(III) In uniform magnetic and uniform electric field that are both parallel | (R) The path may be a circle |
(IV) Subjected to a net force of constant magnitude | (S) The path may be a helix with uniform pitch |
| (T) The path may be a helix with non-uniform pitch |
Options:
Answer:
Solution:
I: in only E the path is straight (velocity parallel to E) or a parabola → P, Q.
II: in only B it is straight, a circle, or a uniform-pitch helix → P, R, S.
III: with E parallel to B, motion along the field is accelerated: straight line or a non-uniform-pitch helix → P, T. IV: a constant-magnitude net force can produce any of P, Q, R, S, T. Option C.
