Question

An electron is moving with velocity v along the axis of a long straight solenoid current carrying I. what will be the force acting on the electron due to megnatic field of solenoid​

Answer 1

Answer:

Let the electron (e) is projected with a uniform velocity (v) in a uniform magnetic field B. The magnitude of force on it is ∣

F

ˉ

∣=−e∣

v

ˉ

×

B

ˉ

∣=−evBsinθ

As θ=0

0

,∣

F

ˉ

∣=−evBsin0

0

Hence the electron will continue to move with uniform velocity along the axis of the solenoid.