An electron moves on a straight line path `Y Y'` as shown in figure. A coil is kept on the right such that `Y Y'` is the plane of the coil. At the instant when the electron gets closest to the coil (neglect self-induction of the coil)

Options

A. (a) the current in the coil flows clockwise
B. (b) the current in the coil flows anticlockwise
C. ( c) the current in the coil is zero
D. (d) the current in the coil does not change the direction as the elctron crosses point `O`

Answer

C

Explanation

(C) When the elctron is closest, flux due to magnetic field of electrin's motion is maximum through the loop. So slope of flux-time graph will be zero or induced emf will be zero.