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Which of the following correctly describ...

Which of the following correctly describes the magnetic field near a long straight wire?

A

The field consists of straight lines perpendicular to the wire

B

The field consists of straight lines parallel to the wire.

C

The field consists of radial lines originating from the wire.

D

The field consists of concentric circles entered on the wire.

Text Solution

Verified by Experts

The correct Answer is:
D
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
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  2. Choose the correct option: The magnetic field inside a long straight...

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  4. The north-south polarities of an electromagnet can be found easily by ...

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  5. The direction of electric current in a solenoid when viewed from a par...

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  6. The direction of electric current in a solenoid when viewed from a par...

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  7. Which of the following is most suitable for the core of electromagnets...

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  8. Magnetic effect of current was discovered by

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  9. A soft iron bar is inserted inside a current-carrying solenoid. The ma...

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  10. The magnetic field lines in the middle of the current-carrying solenoi...

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  11. The front face of a circular wire carrying current behaves like a nort...

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  12. The back face of a circular loop of wire is found to be south magnetic...

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  13. In the straight wire A, current is flowing in the vertically downward ...

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  14. The figure shows a solenoid wound on a core of soft iron. Will the end...

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  15. A current-carrying straight wire is held in exactly vertical position....

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  16. For the coil in the diagram below, when the switch is pressed : (a) ...

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  17. A current flows downwards in a wire that passes vertically through a t...

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  18. The directions of current following in the coil of an electromagnet at...

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  19. A current-carrying conductor is held in exactly vertical direction. In...

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  20. A thick wire is hanging from a wooden table. An anitclockwise magnetic...

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