Physics-
General
Easy
Question
An electron moves on a straight line path XY as shown in the figure. The abcd is a coil adjacent to the path of electron. What will be the direction of current if any induced in the coil?
- no current is induced
- abcd
- adcb
- The current will reverse direction as the electron goes past the coil
The correct answer is: abcd
The moving electron constitutes to the velocity of the electron. That is, the current will be from Y to X. So, the magnetic field through the coil due to the motion of the electron will be into the plane of the paper. To oppose it, in accordance with the Lenz’s law the current in the coil should be along abcd.
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