An electron moves straight inside a charged parallel plate capacitor at uniform charge density σ. The space between the plates is filled with constant magnetic field of induction vector B. Time of straight line motion of the electron in the capacitor is
Correct option (b)
Explanation:
The net force acting on the electron is zero because it moves with constant velocity, due to it'* motion on straight line.
∴ The time of motion inside the capacitor
