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State Ohm’s law and derive it from the b...

State Ohm’s law and derive it from the basic idea of drift velocity of electrons.

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State Ohm's law and derive it from the basic ideas of drift velocity of electrons.

How much is the drift velocity of electrons?

Give the order of magnitude of drift velocity of electrons in a metal.

When a current flows in a conductor, the order of magnitude of drift velocity of electrons thorugh it is

Two different wires X and Y of same diameter but different materials are joined in series across a battery. If the number density of electrons in X is twice that in Y, find the ratio of drift velocity of electrons in the two wires .

Prove that the current density of a metallic conductor is directly proportional to the drift velocity of electrons.

State Ohm’s law. Derive the laws of resistance, when they are connected in series

PUNJAB BOARD PREVIOUS YEAR PAPERS-Electric Current, Resistance and E.M.F. -Exercise
  1. Standard resistance coils are made up of which material why ?

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

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  3. Why connecting wires are made up of copper ?

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

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

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

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

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

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

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  10. What is the effect of rise in temperature on the conductivity of coppe...

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  11. What is meant by resistance of conductor and define its units.

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  12. What is effect of rise in temperature on the conductivity of metallic ...

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  13. Distinguish between emf and potential difference.

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

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

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  16. State Ohm’s law. Derive the laws of resistance, when they are connecte...

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  17. State Ohm’s law. Derive the laws of resistance, when they are connecte...

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  18. Find the equivalent of resistances of the individual resistance connec...

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

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  20. State Ohm’s law and derive it from the basic idea of drift velocity of...

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