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When a charged particle moving with velocity →v is subjected to a magnetic field of induction →B, the force on it is non-zero. This implies that
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- angle between →v and →B can have any value other than 90°
- angle between →v and →B can have any value other than zero and 180°
- angle between →v and →B is either zero or 180°
- angle between →v and →B is necessarily 90°
Correct Option: B
Force on a particle moving with velocity v in a magnetic field B is F = q(→v × →B)
If angle between →v & →B is either zero or 180º, then value of F will be zero as cross product of →v and →B will be zero.
So option (b) is correct.
