A uniform magnetic field exists in the plane of paper as shown in the diagram. In this field, an ele

Question

A uniform magnetic field exists in the plane of paper as shown in the diagram. In this field, an electron $\left(e^{-}ight)$ and a positron ( $p^{+}$) enter as shown.\ The electron and positron experience forces\

Professor PC Thomas Classes · Answer

(a) : As the direction of current is taken opposite to the direction of motion of electrons, therefore, current for the motion of electron and proton is in the same direction, i.e., from bottom to top. Now, according to Fleming's left hand rule, the electron and the proton both experience forces pointing into the plane of paper.