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What is the difference between e.m.f. an...

What is the difference between e.m.f. and potential diffrence?

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BETTER CHOICE PUBLICATION-ELECTRIC CURRENT, RESISTANCE AND E.M.F.-SHORT ANSWER TYPE QUESTIONS
  1. Is a wire carrying current charged?

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  2. What is non-ohmic device? Give one example.

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  3. If the electron drift speed is so small and the electron's charge is s...

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  4. A large number of free electrons are present in metals. Why is there n...

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  5. Standard resistance coils are made of which materials and why ?

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  6. Discuss the effect of temperature on resistivity of metals.

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  7. Why conducting wires are made of copper?

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

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  9. What is the difference between e.m.f. and potential diffrence?

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  10. What are ohmic and non-ohmic resistors? Give one example of each.

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

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  12. Establish the relation between current and drift velocity?

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  13. Define drift velocity of electricity and establish its relation with v...

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  14. Obtain the condition fo rmaximum current through a resisitor, when a n...

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  15. Define internal resistance of cell and find an expression for it.

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  16. What is internal resistance of a cell? Derive an expression for it.

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  17. What is internal resistance of a cell? Derive an expression for it.

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  18. The internal resistance of a cell is the resistance of

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  19. Derive expression for the total resistance of a circuit in which a few...

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  20. Explain colour code for carbon resistors giving examples.

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