Question

A metal ring with a cut as shown in the figure is held horizontally and a bar magnet is dropped though the ring, then the acceleration of the magnet is ________.

• A. Less than $g$
• B. Greater than $g$
• C. Equal to $g$
• D. Either $\left(1\right)$ or $\left(2\right)$

Answer 1

The correct option is C Equal to $g$

A metal ring with a cut as shown in the figure is held horizontally and a bar magnet is dropped through the ring since the ring is cut and emf is not generated because Induced emf is generated only in a closed circuit As faraday's law of Electromagnetic induction states First Law of Faraday's Electromagnetic Induction state that whenever a conductor is placed in a varying magnetic field emf are induced which is called induced emf, if the conductor circuit are closed current are also induced which is called induced current. Hence the acceleration of the magnet is equal to $g$