Question

A charged particle having charge q is moving in a uniform magnetic field parallel to the lines of field force, the magnetic force acting on a charge will be qvB.

• A. True
• B. False

Answer 1

The correct option is B False

We know,

$F=q(v\times B)$

$F=qvB\sin \theta$

Here,

As velocity is parallel to the Field,

$\theta =0$

Hence $F=0$

And $F\ne qvB$