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The north-south polarities of an electro...

The north-south polarities of an electromagnet can be found easily by using :

A

Fleming's right-hand rule

B

Fleming's left-hand rule

C

Clock face rule

D

Left-hand thumb rule

Text Solution

Verified by Experts

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

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  2. Which of the following correctly describes the magnetic field near a l...

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

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

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

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

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  7. Magnetic effect of current was discovered by

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

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

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

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

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

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

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

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

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

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

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

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

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  20. What produces magnetism in the human body ?

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