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An electric bell, works on the principle...

An electric bell, works on the principle of electromagnetic induction.

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State whether the following statements are true or false. (a) An electric motor converts mechanical energy into electrical energy. (b) An electric generator works on the principle of electromagnetic induction. (c) The field at the centre of a long circular coil carrying current will be parallel straight lines. (d) A wire with a green insulation is usually the live wire.

Consider the following statements about an electric bell: I. An electric bell works on the principle of magnetic effect of current II. An electric bell consists of an electromagnet III. An electric bell produces sound continuously Among the given statements,

What is electromagnetic induction?

How in electrical energy generated without using the principle of electromagnetic induction?

PEARSON IIT JEE FOUNDATION-ELECTROMAGNETISM-CONCEPT APPLICATION ( LEVEL 1)
  1. Magnetic lines of force around a current carrying conductor are circul...

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  2. Magnetic effect of current gives rise to mechanical forces.

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  3. An electric bell, works on the principle of electromagnetic induction.

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  4. Electricty and magnetism are two separate branches of physics, which a...

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  5. In a transformer, the ratio of the number of turns in the secondary co...

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  6. If the current in a coil as observed is anticlockwise, then that face ...

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  7. Right-hand grip rule is used to find the direction of deflection of a ...

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  8. In a telegraphis connected to positive terminal of a battery and the n...

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  9. The frequency of the ringing of the bell in an electric bell can be al...

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  10. In a D.C. motor, concave cylindrical magnets produce amagnetic field.

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  11. When there is abetween a magnet and a conductor, an EMF is induced in ...

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  12. Match the entries in Column A with the appropriate ones in Column B.

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  13. A transformer contains 100 and 150 turns in its primary and secondary ...

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  14. A transformer contains 250 and 150 turns in its primary and secondary ...

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  15. In an electric generator, the voltage induced across the terminals of ...

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  16. A current passes from south to north, through a conductor placed in a ...

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  17. Magnetic field lines inside a solenoid

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  18. In an electric generator, the voltage induced across the terminals of ...

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  19. If a bar of steel is placed in a solenoid, then it changes to .

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  20. The work done in bringing a bar magnet near a coil of radius 14 cm is ...

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