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Define the term resistivity and write it...

Define the term resistivity and write its S.I. unit. Derive the expression for the resistivity in terms of number density of free electrons and relaxation time.

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MODERN PUBLICATION-ELECTRIC CURRENT. RESISTANCE AND E.M.F-EXERCISE
  1. Explain how the resistivity of a conductor depends upon relaxation tim...

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  2. Define 'relaxation time' in a conductor. Explain how it varies with in...

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  3. Define the term resistivity and write its S.I. unit. Derive the expres...

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  4. What do you understand by electrical resistivity and give its relation...

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  5. Show that the resistance of a conductor is given by: R = (ml)/(n e^2 t...

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  6. A conductor of length l is connected to a d.c. source of potential V. ...

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  7. Define 'relaxation time' in a conductor. Explain how it varies with in...

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  8. Define resistivity of a conductor. Explain the variation of resistance...

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  9. Define resistivity and state its SI unit. State and explain how to res...

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  10. Write the mathematical relation for the resistivity of a material in t...

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  11. Explain with the help of a graph, the variation of conductivity with t...

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  12. Explain the variation of conductivity of a metallic conductor with tem...

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  13. Express electrical conductivity in terms of charge, mass, number densi...

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  14. Define electric power and electric energy. Give their units.

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  15. Prove that electric energy (W) consumed in a conductor is given by the...

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  16. Obtain the formula for the power loss in a conductor of resistance R a...

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  17. Explain colour code for carbon resistors giving examples.

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  18. What is the need of combining different resistors? What is the resulta...

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

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  20. What do you mean by internal resiatnce, e.m.f. (electromotive force) a...

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