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The magnetic field lines due to a straig...

The magnetic field lines due to a straight wire carrying a current are

A

straight

B

circular

C

parabolic

D

elliptical

Text Solution

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The correct Answer is:
B
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HC VERMA-MAGNETIC EFFECT OF ELECTRIC CURRENT-QUESTION BANK
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  2. An electric current passes through a straight wire. Magnetic compasses...

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  3. The magnetic field lines due to a straight wire carrying a current are

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  4. The magnetic field lines inside a long current-carrying solenoid nearl...

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  5. The direction of the force on a current -carrying wire placed in a mag...

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  6. An electric current can be produced in a closed loop

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  7. Which of the following involves electromagnetic induction ?

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  8. You have a coil and a bar magnet. You can produce an electric current ...

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  9. An electric motor

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  10. A device that can be used to produce an electric current in a circuit ...

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  11. A commutator changes the direction of current in the coil of

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  12. An AC generator is connected to an electric appliance. In 10 revolutio...

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  13. Which of the following describes the common domestic power supplied in...

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  14. In electron fitting in a house

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  15. An electric fuse is based on

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  16. An electric fuse can prevent accidents arising from

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  17. Mark the statement True(T) or False (F). Fleming 's left-hand rule is ...

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  18. Mark the statement True(T) or False (F). Maxwell's right-hand thumb ru...

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  19. Mark the statement True(T) or False (F). The magnetic field at the cen...

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  20. Mark the statement True(T) or False (F). The magnetic field lines ins...

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