Question

This question relates to particles placed in the electric field shown above.
A particle is placed into the electric field $\left(E\right)$, which has a magnetic field superimposed on it as shown. Where in the electric field will the three particles named below be located after a short period of time if they start at Point $E$? The particle is a neutron.

• A. A
• B. B
• C. C
• D. D
• E. E

Answer 1

Answer: (E)

E

As we know neutron is a chargeless ($q=0$) particle , therefore it will not be accelerated by charged plates because electric force $F=qE=0$ and also not be deflected by magnetic force as magnetic force $F^{\prime }=qvB\sin \theta =0$. So it will remain at $E$.