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Explain colour code for carbon resistor ...

Explain colour code for carbon resistor .

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PUNJAB BOARD PREVIOUS YEAR PAPERS-Electric Current, Resistance and E.M.F. -Exercise
  1. What are the factors on which the resistance of the conductor depends ...

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  2. Distinguish between emf and potential difference.

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  3. Explain colour code for carbon resistor .

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  4. Establish the relation between drift velocity of electrons and electri...

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  5. A large number of free electrons are present in metals.Why is there no...

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  6. What is a drift velocity ? Establish the relations between the drift v...

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  7. Why connecting wires are made up of copper ?

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  8. What are ohmic and non-ohmic devices ? Give one example of each.

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  9. What is the resistance of a conductor? State the factors on which resi...

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  10. Which out of the following is used to make standard resistance

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  11. Why connecting wires are made up of copper ?

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  12. Standard resistance coils are made up of which material why ?

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  13. What is the internal resistance of a cell ? Derive an expression for i...

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  14. Why connecting wires are made up of copper ?

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  15. What is the internal resistance of a cell ? Derive an expression for i...

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  16. What is e.m.f. of a cell ? On what factors does its value depend ?

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  17. Establish the relation between drift velocity of electrons and electri...

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  18. What do you mean by conductivity of a material? Give its SI unit.

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  19. What is effect of rise in temperature on the resistivity of metallic c...

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  20. What is meant by resistivity ? Write its S.I. unit.

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