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(A) : Magnetic force is always perpendic...

(A) : Magnetic force is always perpendicular to the magnetic field
(R) : Electric force is along the direction of electric field.

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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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IB
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  4. (A) : The energy of charged particle moving in a uniform magnetic fiel...

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  6. (A) : Magnetic field is useful in producing parallel beam of charged p...

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  7. (A) : A linear solenoid carrying current is equivalent to a bar magnet...

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  8. (A) : The resultant magnetic field on the axial point of circular loop...

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  9. (A) : A circular loop carrying current lies in XY plane with its centr...

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  11. (A) : When the observation point lies along the length of the current ...

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  12. (A) : A solenoid tend to contract when a current passes through it. ...

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  13. (A) : A loosely round helix made of stiff wire is suspended vertically...

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  14. (A) : The magnetic field at the ends of a very long current carrying s...

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  15. (A) : A loosely wound helix made of stiff wire is suspended vertically...

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  16. (A) : Various regular polygons are formed by a constant length current...

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  17. (A) : A current carrying wire loop of irregular shape placed in an ext...

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  18. (A) : A current carrying circular loop, free to turn, when placed in a...

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  19. (A) : Ampere's circuital law is of the BiotSavart law. (R) : Ampere'...

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