1.

A copper wire ab of length l, resistance r and mass m start sliding at t=0 down a smooth, vertical, thick pair of connected conducting rails as shown in figure. A uniform magnetic field B exists in the space in a direction perpendicular to the plane of the rails which options are correct .

Answer»

The magnitude and direction of the induced current in the wire when SPEED of the wire v is `(vBl)/( r)`, a to b
The DOWNWARD acceleration of the wire at this instant `g-(B_(2)l^(2))/(mr)v`
The velocity of the wire as a function of time `v_(m)(1-e^(-"GT"//v_(m))),("where" v_(m)=(mgr)/(B^(2)l^(2)))`
The displacement of the wire as a function of time `v_(m)t-(v_(m)^(2))/(g)(1-e^(-"gt"//v_(m))),("where" v_(m)=(mgr)/(B^(2)l^(2)))`

Answer :A::B::C::D


Discussion

No Comment Found

Related InterviewSolutions