A bar magnet is released from rest coaxially | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) As the bar magnet falls through the copper tube,the change in magnetic flux linked with the tube induces eddy currents in the copper walls.Accordi

Vedclass · Accepted Answer

Will move with almost constant speed

Vedclass · Answer

(B) As the bar magnet falls through the copper tube,the change in magnetic flux linked with the tube induces eddy currents in the copper walls.According to Lenz's law,these eddy currents create a magnetic field that opposes the motion of the falling magnet.As the magnet gains speed,the induced electromotive force $(EMF)$ and the resulting eddy currents increase,leading to a greater opposing magnetic force.Eventually,the upward magnetic force balances the downward gravitational force $(mg)$.At this point,the net force on the magnet becomes zero,and it reaches a terminal velocity,moving with an almost constant speed.

$A$ bar magnet is released from rest coaxially along the axis of a very long,vertical copper tube. After some time,the magnet:

Similar Questions

The core used in transformers and other electromagnetic devices is laminated to

The working of magnetic braking of trains is based on

The core of any transformer is laminated so as to

$A$ metallic ring connected to a rod oscillates freely like a pendulum. If a magnetic field is applied in the horizontal direction such that the pendulum swings through the field,the pendulum will:

$A$ magnet is dropped down an infinitely long vertical copper tube. Then

Vedclass Test Series

Exam Paper Generator

Online Exam Module