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According to Joule's law, if the potenti...

According to Joule's law, if the potential difference across a conductor having a material of specific resistance p remains constant, then the heat produced in the conductor is directly proportional 

A

`rho`

B

`rho^(2)`

C

`(1)/(sqrt(rho))`

D

`(1)/(rho)`

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - IA
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  2. A constant voltage is applied between the two ends of a metallic wire....

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  3. According to Joule's law, if the potential difference across a conduct...

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  4. A resistor R(1) dissipates the power P when connected to a certain gen...

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  5. Appliances based on heating effect of current work on

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  6. The electric power transferred by a cell to an external resistance is ...

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  7. When electric bulbs of same power, but different marked voltage are co...

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  8. Choose the correct statement

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  9. For a cell which charging in a circuit

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  10. The dimensional formula of the emf of a source of current are same as ...

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  11. Internal resistance of a cell depends on

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  12. When cells are arranged in series

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  13. To supply maximum current, cells should be arrange in

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  14. The terminal Pd of a cell is equal to its emf if

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  15. Back emf of a cell is due to

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  16. When an electric cell drives current through load resistance, its Back...

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  17. Which depolarizers are used to neutralizes hydrogen layer in cells

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  18. Two batteries of emfs epsilon(1) and epsilon(2) (epsilon(2) gt epsilon...

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  19. A battery consists of a variable number n of identical cells having in...

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  20. A cell of emf E has an internal resistance r & is connected to rheosta...

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