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A soft iron bar is inserted inside a cur...

A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid :

A

will decrease

B

will increase

C

will become zero

D

will remain the same

Text Solution

Verified by Experts

The correct Answer is:
B
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. Which of the following is most suitable for the core of electromagnets...

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  2. Magnetic effect of current was discovered by

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

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

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

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

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

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

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

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

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

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

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

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

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  15. What produces magnetism in the human body ?

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  16. What is the full form of MRI ?

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  17. When is the force experienced by a current-carrying conductor placed i...

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  18. When is the force experienced by a current-carrying conductor placed i...

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  19. In a statement of Feming's left-hand rule, what do the following repr...

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  20. Name one device which works on the magnetic effect of current.

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