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Derive the relation between electric fi...

Derive the relation between electric field and current density.

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CHETANA PUBLICATION-ELECTRIC CURRENT THROUGH CONDUCTORS-EXERCISE
  1. Draw VI. curve of a conductor.

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  2. Define conductance. State its unit and dimension

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  3. Derive the relation between electric field and current density.

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  4. Show that σ = \(\frac{ne^2\tau}{m}\). Where symbols have usual meaning...

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  5. A Flashlight usestwo 1.5V batteries to provide a steady current of 0.5...

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  6. DC current flows in a metal piece of non-uniform cross-section. Which ...

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  7. Explain the limitations of Ohm's law.

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  8. Distinguish between ohmic substances and non-ohmic substances.

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  9. Define the expression for power. State its unit.

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  10. Explain the heating effect of electric current.

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  11. An electric heater takes 6A current from a 230V supply line, calculate...

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  12. The heating element connected to 230V draws a current of 5A. Determine...

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  13. What are resistors? State its types and uses.

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  14. Explain the colour code system for resistors.

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  15. Find the value of resistances for the following colour code. Blue Gr...

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  16. Find the value of resistances for the following colour code. Brown Bl...

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  17. Find the value of resistances for the following colour code. Red Red ...

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  18. Find the value of resistances for the following colour code. Orange W...

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  19. Find the value of resistances for the following colour code. Yellow V...

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  20. Find the colour code for the following value of resistor having tolera...

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