Correct option is B
The correct answer is (B) zero
- When a cylindrical bar magnet is rotated about the axis of a circular solenoid, no electric current is induced in the solenoid.
Information booster:
- Principle of Electromagnetic Induction: According to Faraday's Law of Electromagnetic Induction, an electric current is induced in a solenoid only when there is a change in the magnetic flux through it.
- Magnetic Flux in This Case: The magnetic flux is the amount of magnetic field passing through the solenoid's cross-sectional area.
- When the bar magnet is rotated about the solenoid's axis, the magnetic field through the solenoid's coils does not change. The rotation only changes the orientation of the magnet, but since it is aligned along the axis, there is no variation in the flux.
- No Change in Flux: Without a change in magnetic flux, Faraday's Law states that no electromotive force (EMF) is induced. As a result, no current flows in the solenoid.
English
100 Questions
100 Marks
90 Mins
turns per meter. At the centre of the solenoid a coil of 100 turns and radius 0.01 m is placed with is axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If the resistance of the coil is
then the total charge flowing through the coil during this time is ____________.
