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

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

A

will become zero

B

will decrease

C

will increase

D

will remain unaffected.

Text Solution

Verified by Experts

The correct Answer is:
C
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MTG IIT JEE FOUNDATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXERCISE ( MULTIPLE CHOICE QUESTIONS)
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  2. In case of a solenoid, the strength of magnetic field depends upon

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  3. The direction of magnetic field around a current carrying conductor is...

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  4. Magnetic field produced by a solenoid and a bar magnet

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  5. The direction of force (motion) of a current carrying conductor in a m...

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  6. A magnetic field exerts no force on

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  7. What is a solenoid? Draw magnetic field lines due to a current carryin...

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  8. A soft iron bar is inserted inside a curren-carrying solenoid. The mag...

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  9. A magnetic needle is used to find

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  10. An electric current predominantly produces field around it.

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  11. Magnetite is a/an

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  12. By increasing the number of turns in the coil, the strength of the mag...

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  13. Choose the correct statement.

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  14. If current in the core decreases, the strength of the magnetic field

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  15. The fact that current is associated with a magnetic field was first di...

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  16. An electromagnet is a magnet whose magnetism arises due to

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  17. A compass needle just above a wire in which electrons are moving towar...

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  18. The magnetic field lines around a bar magnet can be traced with the he...

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  19. When a charged particle moves through a magnetic field it suffers a ch...

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  20. A straight wire is carrying an electric current

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