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What is the need of combining different resistors? What is the resulant resistance when number of resistances are connected in series?

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MBD -HARYANA BOARD-ELECTRICITY-EXAMPLE
  1. State Ohm's law ? How can it be verified experimentally ? Does it hold...

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  2. State Ohm's law. How can it be verified experimentally ? Explain with ...

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  3. What is the need of combining different resistors? What is the resulan...

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  4. State Ohm's law. Derive the laws of resistances, when they are connect...

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  5. With the help of a diagram derive the formula for the equivalent resis...

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  6. Define electric power and give its unit.

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  7. What is meant by power and energy ? Give their units.

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  8. What is electric energy ? what is its si unt?

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  9. What is the contribution of electricity in our daily life?

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  10. What do you understand by static electricity?

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  11. What are positive and negative charges?how are these produced?

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  12. What is an electric circuit ?

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  13. Distinguish between good conductors, resistors and insulators. Name tw...

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  14. What is electromotive force of a cell?

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  15. What is the potential difference between two points in the electric fi...

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  16. Define volt it is unit of which physical quantity?

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  17. How can we say that electric current is due to flow of charge?

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  18. What is meant by electric current?

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  19. What is an electric current ? Give its SI unit.

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  20. How does electric current produce heat?

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