A proton and an electron having equal velocity are allowed to pass through a uniform magnetic field. Which one of the following statements is correct in this connection?

Options

A. The proton and the electron experience equal and opposite force
B. The proton experiences greater force then does the electron
C. The electron experiences more force than does the proton
D. No moving charged particle experiences a force in a magnetic field

Answer

A

Explanation

The force experienced by a particle having charge 9 moving with a velocity `vec(v)` in a uniform magnetic field `vec(B)` is given by `vec(F)=9(vec(v)xx vec(B))`
From above expression it is clear that both electron and proton will experience equal but opposite force as they have equal but opposite charges.