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An electromagnet uses...

An electromagnet uses

A

soft iron core

B

steel core

C

nickel core

D

copper core

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
  1. Steel si preferred for making permanent magnets, whereas soft iron is ...

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  2. A permanent magnet magnet has the properties of retentivity and coerci...

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  3. An electromagnet uses

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  4. Core of transformer is made up of

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  5. A current I flows along the length of an infinitely logn, straight and...

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  6. A power line lies along east-west direction and carries a current of 1...

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  7. A moving coil galvanometer has a resistance of 900 ohm. In order to se...

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  8. A moving coil galvanometer of resistance 100Omega is used as an ammete...

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  9. The magnetic field lines

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  10. A paricle of charge q and mass m moves in a circular orbit of radius r...

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  11. Two particles , each of mass m and charge q, are attached to the two e...

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  12. A bar magnet is placed inside a non-uniform magnetic field. It experie...

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  13. The angle between the earth's magnetic axis and earth's geographic axi...

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  14. The line joining the points of horizontal component of earth's magneti...

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  15. If a diamagnetic solution is poured into a U-tube and one am of this U...

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  16. The mensicus of a liquid contained in one of the limbs of a narrow U-t...

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  17. A magnetic needle suspended by a silk thread is vibrating in the earth...

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  18. Electromagnets are made of soft iron, because soft iron has

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  19. Tesla is the unit of

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  20. The unit of magnetic induction is

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