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A conducting bar of length L is free to ...

A conducting bar of length L is free to slide on two parallel conducting rails as shown in the figure

Two resistors `R_(1) and R_(2)` are connected across the ends of the rails. There is a uniform magnetic field `vecB` pointing into the page. An external agent pulls the bar to the left at a constant speed v.
The correct statement about the directions of induced currents` I_(1) and l_(2)` flowing through `R_(1)` and `R_(2)` respectively is:

A

Both `I_(1) and I _(2)` are in anticlockwise direction

B

`I _(1)` is in anticlockwise direction and `I _(2)` is in clockwise direction

C

Both `I _(1) and I _(2)` are in clockwise direction

D

`I _(1)` is in clockwise direction and `I _(2)` is in anticlockwise direction

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Knowledge Check

  • 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)

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    Will be converted fully into heat energy in the resistor
    B
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    C
    Will be converted fully into magnetic energy due to induced current
    D
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  • A horizontal wire is free to slide on the verticle rails of a conducting frame as shown in figure. The wire has a mass m and length l and the resistance of the circuit is R . If a uniform magnetic field B is directed perpendicular to the frame, the terminal speed of the wire as it falls under the force of gravity is

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  • Two idential conductors P and Q are placed on two frictionless rails R and S in a uniform magnetic field directed into the plane. If P is moved in the direction shown in figure with a constant speed, then rod Q

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    B
    will be repelled away from `P`
    C
    will remain stationary
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