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How many electrons per second pass throu...

How many electrons per second pass through a section of wire carrying a current of `0.7A`?

Text Solution

Verified by Experts

We known that `I = (q)/(t) = ("ne")/(t) , therefore, n = (it)/(e ) = (0.7xx1)/(1.6x10^(-19)`
So number of electrons in `n = 0.44xx10^(19)`
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CENGAGE PHYSICS-ELECTRIC CURRENT AND CIRCUIT-Exercise 5.1
  1. How many electrons per second pass through a section of wire carrying...

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  2. A current of 7.5 A is maintained in wire of 45 s. In this time a. h...

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  3. If 0.6 mol of electorns flows throutgh a wire in 45 min, what are (a) ...

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  4. A typical copper wire might have 2xx10^(21) free electrons in 1 cm of ...

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  5. A coil of wire has a resistance of 25.00Omega at 20^@ C and a resist...

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  6. A metal wire of diameter 2mm and of length 300m has a resistance of 1....

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  7. It is desired to make a 20Omega coil of wire, which has a zero thermal...

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  8. A resistance thermometer measures temperature with the increase in res...

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  9. Though the drift velocity of electorn responsible for current in a con...

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  10. a. A steady current flows in a metallic conductor of non - uniform cro...

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  11. A potential difference V is applied to copper wire fo diameter d and l...

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  12. A wire has a resistance R. What will be its resistace if (a) it is d...

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  13. The current in a wire varies with time according to the equation I = ...

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  14. The following table gives the length of three copper rods, their diame...

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  15. The current voltage graphs for a given metalic wire two different temp...

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  16. The voltage-current variations of two metallic wire X and Y at constan...

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  17. A beam contains 2.0xx10^8 doubly charged positive ions per cubic centi...

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  18. The current density across a cylindrical conductor of radius R varies ...

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  19. Shown a conductor of length l having a circular cross section. The rad...

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  20. If a copper wire is stretched to make it 0.1% longer wha is the percen...

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