When a charged particle moving with velocity 
is subjected to a magnetic field of induction 
, the force on it is non-zero. This implies that:
and 
is necessarily 90°
and 
can have any value other than 90°
and 
can have any value other than zero and 180°
and 
is either zero or 180°
Text Solution
Verified by ExpertsC
When a charged particle q is moving in a uniform magnetic field 
with velocity 
such that angle between 
and 
be θ then due to interaction between the magnetic field produced due to moving charge and magnetic field applied, the charge q experiences a force which is given by
F = qvB sinθ
If θ = 0° or 180°, then sinθ = 0
∴ F = qvB sinθ = 0
Since, force on charged particle is non-zero, so angle between 
and 
can have any value other than zero and 180°
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