Question

10. There is no force on moving charge, in magnetic field, when
its direction of motion is :
(a) parallel to the direction of magnetic field
(b) at an angle of 45° to the magnetic field
(c) at an angle of 30° to the magnetic field
(d) perpendicular to the magnetic field.​

Answer 1

Answer:

(a) Parallel to the direction of magnetic field is your answer mate

If the magnetic field and the velocity are parallel (or antiparallel), then sinθ equals zero and there is no force.

Hope this helps mate.... Please follow me....