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Magnetic field at a distance a from long...

Magnetic field at a distance a from long current carrying wire is proportional to

A

`1/a`

B

`1/(a^(2))`

C

`1/(sqrta)`

D

`1/(a^(3//2))`

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The correct Answer is:
A
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-IA
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  2. A current I(1) carrying wire AB is placed near another long wire CD ca...

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  3. Magnetic field at a distance a from long current carrying wire is prop...

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  4. Two equal electroic currents are flowing perpendicular to each other a...

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  5. A very long straight wire carries a current I. At the instant when a c...

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  6. A closed loop PQRS carrying a current is placedin auniform magnetic fi...

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  7. A current carrying closed loop in the form of a right angled isoscels ...

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  8. A coil carrying electric current is placed in uniform magnetic field

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  9. Two identical long conducting wires AOB and COD are placed at right an...

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  10. Two infinitely long thin , insulated,straight wires lie in the x-y pla...

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  11. The correct match is

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  12. A steady electric current is flowing through a cylindrical conductor. ...

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  13. An electron beam produces i) Electrical field around the beam ii) ...

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  14. A thin straight vertical conductor has 10 amp current, vertically upwa...

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  15. Two straight parallel conductors are kept horizontally one above the o...

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  16. Two wires carrying

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  17. A square loop, carrying a steady current I, is placed in a horizontal ...

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  18. A long, straight wire carries a current along the z-axis. One can find...

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  19. A loosely wound helix made of stiff metal wire is mounted vertically w...

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  20. A current carrying loop in a uniform magnetic field will experience to...

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