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A conducting rod of mass m and length l ...

A conducting rod of mass m and length l is free to move without friction on two parallel long conducting rails, as shown below. There is a resistance R across the rails. In the entire space around, there is a uniform magnetic field B normal to the plane of the rod and rails. The rod is given an impulsive velocity `v_(0)`-

Finally, the initial energy `(1)/(2) mv_(0)^(2)`

A

Will be converted fully into heat energy in the resistor

B

Will enable rod to continue to move with velocity `v_(0)` since the rails are frictionless

C

Will be converted fully into magnetic energy due to induced current

D

Will be converted into the work done against the magnetic field

Text Solution

Verified by Experts

The correct Answer is:
A
Due to the negative work on rod . .EK will decrease and finally become zero.
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