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(A) : The magnetic field in the open spa...

(A) : The magnetic field in the open space inside and exterior to the toroid is zero.
(R) : Field produced by a toroid could be derived using Amperes circuital law.

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

Verified by Experts

The correct Answer is:
B
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Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why ?

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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IB
  1. (A) : The magnetic field at the centre of a circular coil carrying cur...

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  2. (A) : Solenoid produces uniform magnetic field along its axis. (R) :...

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

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

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

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

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

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

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

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

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

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

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

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

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  15. (A) : In case of M.C.G the torque on the coil is maximum in any positi...

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  16. (A) : Earth's magnetic field does not affect the working of a moving c...

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  17. (A) : The coil is wound over the metallic frame in moving coil galvano...

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  18. (A) : The tangent galvanometer can be made more sensitive by increasin...

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  19. (A) : Working of a moving coil galvanometer is based on heating effect...

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  20. (A) : A tangent galvanometer is used for measuring current. (R) : Ta...

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