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(A) : A current carrying circular loop, ...

(A) : A current carrying circular loop, free to turn, when placed in an external magnetic field, orients its plane normal to field.
(R) : The potential energy of the system is minimum at stable equilibrium position.

A

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.

B

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

C

'A' is true and 'R' is false

D

'A' is false and 'R' is false

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IB
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  8. (A) : Solenoid produces uniform magnetic field along its axis. (R) :...

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  9. (A) : The magnetic field in the open space inside and exterior to the ...

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  10. (A) : The orbital magnetic moment and angular momentum of orbiting ele...

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  11. (A) : When radius of circular loop carrying current is doubled, its ma...

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  12. (A) : A planar circular loop of area A and carrying current 1 is equiv...

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  13. (A) : A charged particle can be accelerated in a cyclotron by the osci...

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  14. (A) : The magnetic field of an infinite length of wire carrying curren...

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  15. (A) : A current I flows along the length of an infinitely long, straig...

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  16. (A) : Ampere's law holds for steady currents in straight conductor whi...

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  17. (A) : A spark occur between the poles of a switch when the switch is o...

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  18. (A) : In electric circuits, wires carrying currents in opposite direct...

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  19. (A) : When two long parallel wires, hanging freely are connected in pa...

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  20. (A) : Torque on the coil is always maximum, when coil is suspended in ...

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