Question

20. Current 1, flows through solenoid of length 4 having N number of turns, when it is connected to DC enf.
charged particle is projected along the axis of solenoid with a speed. Vo, then the force on the charged partic
in the solenoid:
(1) Becomes zero
(2) Remains same
(3) Decreases
(4) Increases​

Answer 1

Answer:

I am not sure but I think so becomes zero