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State two ways by which speed or rotatio...

State two ways by which speed or rotation of rotation of electric motor can be increased.

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1) By increasing strength of the current
2) By increasing number of turns in the coil
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VGS PUBLICATION-BRILLIANT-ELECTROMAGNETISM-CREATIVE QUESTION FOR NEW MODEL EXAMINATION (SEC-2) CONCEPTUAL UNDERSTANDING
  1. What is the shape of the magnetic field lines around a current carryin...

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  2. What is the relation between tesla and ampere-meter?

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  3. State two ways by which speed or rotation of rotation of electric moto...

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  4. Is what from the energy in a current carrying coil is stored?

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  5. Draw the diagram of a solenoid.

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  6. What is the direction of magnetic field line inside of a solenoid?

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  7. List any two properties of magnetic field lines.

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  8. Take a bar magnet and bring it near the T.V screen . What do you obser...

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  9. What is meant by electromagnetic induction?

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  10. What is induced Emf?

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  11. What will happens if we sprinkle iron fillings around a current carryi...

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  12. Here the directions of the field (B) is given for a positive charge. W...

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  13. Dheeraj was brought a loud speaker nearer to a working television. H...

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  14. IF the current in the coil is in anti-clockwise then what would be the...

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  15. IF the current in the coil is in clockwise then what would be the face...

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  16. When will be the magnetic field uniform?

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  17. What happens to the magnetic field at the centre on increasing current...

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  18. What happens if an iron place is dropped between two poles of strong m...

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  19. IF a copper rod carries a direct current,then where will the magnetic ...

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