Question

An electron moves straight inside a charged parallel plate capacitor of uniform charge density σ The time taken by the electron to cross the parallel plate capacitor when the plates of the capacitor are kept under constant magnetic field of induction `vec"B"` is-

Options

• `epsilon_circ "elB"/sigma`

• `epsilon_circ "lB"/(sigmal)`

• `epsilon_circ "lB"/("e"sigma)`

• `epsilon_circ "lB"/sigma`

Answer 1

`epsilon_circ "lB"/sigma`