A proton and electron, travelling with the same velocity in the $+x$ direction, enter separate regions, each with a uniform magnetic field in the $\pm \mathrm{y}$ direction (magnitude $\mathrm{B}_{\mathrm{p}}$ for the proton, $\mathrm{B}_{\mathrm{e}}$ for the electron). They each experience the same acceleration. What can we conclude?
A) The magnetic fields were in the same direction and have ratio $B_{p} / B_{e}=m_{e} / m_{p}$.
B) The magnetic fields were in the opposite direction and have ratio $B_{p} / B_{e}=m_{p} / m_{e}$.
C) The magnetic fields were identical in magnitude and direction.
D) The magnetic fields were in the opposite direction and have ratio $B_{p} / B_{e}=m_{e} / m_{p}$.
E) The magnetic fields were identical in magnitude and opposite in direction.
F) The magnetic fields were in the same direction and have ratio $B_{p} / B_{e}=m_{p} / m_{e}$.

Question

Quizplus · Accepted Answer

The Answer of A proton and electron, travelling with the same velocity in the $+x$ direction, enter separate regions, each with a uniform magnetic field in the $\pm \mathrm{y}$ direction (magnitude $\mathrm{B}_{\mathrm{p}}$ for the proton, $\mathrm{B}_{\mathrm{e}}$ for the electron). They each experience the same acceleration. What can we conclude?
A) The magnetic fields were in the same direction and have ratio $B_{p} / B_{e}=m_{e} / m_{p}$.
B) The magnetic fields were in the opposite direction and have ratio $B_{p} / B_{e}=m_{p} / m_{e}$.
C) The magnetic fields were identical in magnitude and direction.
D) The magnetic fields were in the opposite direction and have ratio $B_{p} / B_{e}=m_{e} / m_{p}$.
E) The magnetic fields were identical in magnitude and opposite in direction.
F) The magnetic fields were in the same direction and have ratio $B_{p} / B_{e}=m_{p} / m_{e}$.

A Proton and Electron, Travelling with the Same Velocity in The +x