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Current flows through a straight cylindr...

Current flows through a straight cylindrical conductor of radius r. The current is distributed uniformly over its cross-section. The magnetic field at a distanace x from the axis of the conductor has magnitude B:

A

(i),(ii)

B

(ii),(iii),(iv)

C

(i),(ii),(iii)

D

all

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The correct Answer is:
D
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CP SINGH-MAGNETIC FIELD-EXERCISE
  1. A long, straight wire of radius R carries a current distributed unifor...

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  2. A solid metallic cylinder carriers a direct current. The magnetic fiel...

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  3. A hollow tube is carrying an electric current along its length distrib...

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  4. Current flows through a straight cylindrical conductor of radius r. Th...

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  5. In a coaxial, straight cable, the central conductor and the outer cond...

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  6. A current I flows along the length of an infinitely long, straight , ...

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  7. A long straight wire of radius a carries a steady current i. The curre...

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  8. The magnetic field due to a conductor fo unifrom cross section of radi...

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  9. An infinitely long hollow conducting cylinder with inner radius (r )/(...

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  10. A coaxial cable consists of a thin inner conductor fixed along the axi...

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  11. In previous question, if both conductors carry equal currents in the s...

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  12. let B be the magnetic field at a point between the two conductors, at ...

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  13. A long, straight, hollow conductor (tube) carrying a current has two s...

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  14. Consider a coaxial cable which consists of an inner wire of radius a s...

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  15. A long solenoid is fabricated by closely winding a wire of radius 0.5 ...

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  16. A long solenoid carrying a current produces a magnetic field B alon...

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  17. There are 50 turns of a wire in every cm langth of a long solenoid. If...

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  18. A coil having N turns is would tightly in the form of a spiral with in...

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  19. A charge Q is uniformly distributed over the surface of non - conducti...

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  20. Two identical conducting wires AOB and COD are placed at right angles ...

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