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What is the resistivity and current dens...

What is the resistivity and current density? Give their SI unit.

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R G PUBLICATION-CURRENT ELECTRICITY-EXERCISE
  1. What is electic current?

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  2. Show that for a conductor R = P l/A where L is the length and A is the...

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  3. What is the resistivity and current density? Give their SI unit.

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  4. Define conductivity.

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  5. What is the drift velocity of electrons in a conductor? Establish the ...

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  6. What is mobility?Give its SI unit.

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  7. Draw the characteristic curve of a diode of voltage V versus current I...

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  8. What is resistors? Why resistors are made mostly from carbon?

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  9. Distinguish between conductors and insulators .Give examples.

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  10. What is semiconductors? Give examples.

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  11. "To reduce power dissipation in the connecting wires between different...

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  12. What is internal resistance of a cell?

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  13. State and explain Kirchhoff's rules used for analysis of an electric c...

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  14. State and explain Kirchhoff's rules used for analysis of an electric c...

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  15. Give the experimental procedure to find out the internal resistance o...

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  16. What is the principle of a meter bridge.

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  17. What is specific resistance of a conductor? How it is related to elect...

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  18. The resistance of a Cu wire at 20^@C is 200Omega what is the resistanc...

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  19. A current of 10 ampere passes through a wire having cross-sectional ar...

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  20. Obtain an expression for equivalent resistance of three conductors whe...

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