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If a long hollow copper pipe carriers a ...

If a long hollow copper pipe carriers a direct current, the magnetic field associated with the current will be:

A

only outside the wire

B

only inside the wire

C

both inside and outside the wire

D

neither inside nor outside the wire

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The correct Answer is:
A
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PRADEEP-MAGNETIC EFFECT OF CURRENT AND MAGNETISM-Exercise
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  6. A thin ring of radius R metre has charge q coulomb uniformly spread ...

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  7. A small coil of N turns has area A and a current I flows through it. T...

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  8. A circular coil carrying current behaves as a

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  9. A long solenoid has n turns per metre and current IA is flowing throug...

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  11. An electron is moving at a speed of 100ms^-1 along the x-axis through ...

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  12. The force between two parallel current carrying wires is independent o...

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  13. A straight conductor is placed along the axis of a circular coil perpe...

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  14. The force experienced by a wire of length 10cm kept at an angle of 30^...

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  15. A rectangular coil of turns 500 and area 2cmxx1cm carries 100mA curren...

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  16. To protect galvanometer from possible damages due to large current, wh...

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  17. To convert galvanometer into ammeter which one of the following is con...

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  18. An ammeter reads upto 1 ampere. Its internal resistance is 0.81 ohm. T...

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  19. A galvanometer has a resistance of 30Omega and a current of 2*0mA give...

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  20. Choose the correct statement.

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