A charged particle of charge q moving with the velocity v, enters along the axis of a solenoid carrying a current. If B is the magnetic induction along the axis of the solenoid then the force acting on the charged particle will be

Options

A. `qvB`
B. less then qvB
C. `zero`
D. more than qvB

Answer

C

Explanation

`vecB and vecV` are parallel therefore the force acting on the charged particle `vecF=q(vecV xx vecB) therefore F=qVB sin 0^(@)=0`