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A long hollow copper pipe carries a curr...

A long hollow copper pipe carries a current. Then, the magneic field product is

A

both inside and outside the pipe

B

neither inside nor otuside the pipe

C

outside the pipe only

D

inside the pipe only

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
  1. The magnetic field B due to a current carrying circular loop of radius...

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  2. A wire carrying current I and other carrying 2I in the sam direction p...

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  3. A long hollow copper pipe carries a current. Then, the magneic field p...

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  4. A solenoid 1.5 m long and 0.4 cm in diameter possesses 10 turns per cm...

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  5. The magnitude of magnetic induction for a current carrying toroid of u...

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  6. The path of an electron in a uniform magnetic field may be

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  7. Cyclotron is a device to

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  8. A cyclotron is operating at a frequency of 12xx10^(6)Hz. Mass of deute...

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  9. A straight wire of mass 200 g and length 1.5 m carries a current of 2 ...

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  10. Two wires carry current in different directions. They will:

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  11. A galvanometer having a resistance of 8 ohm is shunted by a wire of re...

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  12. A galvanometer coil has a resistance of 15 ohm and gives full scale de...

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  13. A galvanometer having a coil resistance of 100 omega gives a full scal...

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  14. To convert galvanometer into a voltmeter.

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  15. An ammeter and a voltmeter are joined in series to a cell. Their readi...

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  16. Unit of reduction factor is

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  17. The magnetic moment is a

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  18. The magnetic moment has dimension of

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  19. A bar magnet of magnetic moment M is cut into two parts of equal lengt...

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  20. The direction of the neutral points is on the equitorial line of a bar...

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