A charged particle moves insides a pipe which is bent as shown in Fig. 1.151. If `Rlt (mv)/(qB)` , then force exerted by the pipe on charged particle at P is (Neglect gravity)

Options

A. towards center
B. away from centre
C. zero
D. None of these

Answer

a

Explanation

Radius of circular path of the charged particle `r=(mV)/(qB)`
Here Rltr, hence the particle will press the outer wall of
the pipe hence the force applied by the pipe on the particle
should be towards the centre of the page.