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A metallic rod of mass per unit length 0...

A metallic rod of mass per unit length 0.5 kg `m^(-1)` is lying horizontally on a smooth inclined plane which makes an anlge of `30^(@)` with the horizontal. The rod is not allowed to slide down by a flowing a current through it when a magnetic field of intuctioni 0.25 T is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is

A

7.14 S

B

5.98 A

C

11.32 A

D

14.76 A

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The correct Answer is:
C
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-III
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  5. A toroid has a core (non-ferromagnetic) of inner radius 25 cm and oute...

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  6. A 3.0 cm wire carrying a current of 10 A is placed inside a solenoid p...

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  10. A solenoid has 10^(3) turns per unit length. On passing a current of 2...

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  11. Currents of 10 A and 2A are passed through two parallel wires A and B ...

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  12. Wires 1 and 2 carrying currents i1 and i2 respectively are inclined at...

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  13. Two parallel horizontal conductors are suspended by two light vertical...

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  14. Two long parallel wires are at a distance 2d apart. They carry steady ...

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  15. A conducting ring of mass 2kg, radius 0.5m carries a current of 4A. I...

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  16. A circular coil of 25 turns and radius 12 cm is placed in a uniform ma...

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  17. A galvanometer having a resistance of 50Omega, gives a full scale defl...

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  18. An arrangement of three parallel straight wires pl,aced perpendicular ...

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  19. The deflection of a galvanometer falls to 1//10^(th) when a resistanc...

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