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Drift speed of electron is much smaller than its thermal speed but it is responsible for electric current in conductor justify.

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Similar Questions
Q1

What happens to the drift speed of electrons in a conductor when it is heated ? Justify .

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Q2
The electron drift speed is small and the charge of the electron is also small but still, we obtain large current in a conductor. This is due to
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Q3
Establish a relation between electric current and drift velocity.
OR
Prove that the current density of a metallic conductor is directly proportional to the drift speed of electrons.
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Q4

In an isolated conductor, the electrons are moving with speed of 105ms-1 while when the same conductor is connected across a battery the electron drift with a speed of 104ms-1. Inspite of having very high speeds in the 1st case there is no electric current but in 2nd case the current is there. Explain this statement.


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Q5
Solve this :

1. (a) Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 1.0×10-7 m2 carrying a current of 1.5 A. Assume that each copper atom contributes roughly one conduction electrons. The density of copper is 9.0×105 kg/m3. and its atomic mass is 63.5 u. (b) Compare the drift speed obtained above with. (i) thermal speeds of copper atoms at ordinar temperature. (ii) speed of propagation of electric feild along the conductor which causes the drift motin.
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