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Define the term current density....

Define the term current density.

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Current density is defined as the ratio of electric current to the area of cross section of the conductor.
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SUBHASH PUBLICATION-CURRENT ELECTRICITY-NUMERICAL PROBLEMS AND ANSWERS
  1. Define the term current density.

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  2. In the given circuit, calculate the effective resistance between A and...

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  3. In the given circuit, calculate the current through the circuit when c...

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  4. In the given circuit, calculate the current through 3Omega resistor, w...

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  5. A battery of internal resistance 3Omega is connected to 20Omega resist...

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  6. A network of resistors is connected to a 12V battery as shown in the f...

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  7. A network of resistors is connected to a 12V battery as shown in the f...

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  8. Two cells of emf 2V and 4V and internal resistance 1Omega and 2Omega r...

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  9. Which two resistors are connected in series with a cell of emf 2V and ...

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  10. Two resistors of resistances 2Omega and 4Omega are connected in parall...

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  11. Three equal resistors connected in series across a source of emf of ne...

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  12. A copper wire has 3xx 10^(22) free electrons in 0.021 m length. The dr...

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  13. A copper wire has 3xx 10^(22) free electrons in 0.021 m length. The dr...

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  14. A cube of side 0.05 m of a material of conductor is drawn into a wire ...

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  15. If the number density of electrons in a conductor is 3 xx10^(28) and t...

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  16. Two resistors 10Omega and 25Omega are connected in series and the comb...

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  17. Four resistors of resistances 2Omega, 1Omega, 3Omega, 4Omega are arran...

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  18. ABCD forms the four arms of a Wheatstone's network. The arms AB, BC, C...

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  19. A battery of emf 10V and internal resistance 3Omega is connected to a ...

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  20. Three resistors 2Omega, 4Omega and 5Omega are connected in parallel. W...

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  21. Three resistors 2Omega, 4Omega and 5Omega are connected in parallel.If...

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