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The number density of free electrons in ...

The number density of free electrons in a copper conductor is estimated at `8.5 xx 10^(28) m^(-3)`. How long does an electron take to drift from one end of a wire 3.0 m long to its other end? The area of cross-section of the wire is `2.0 xx 10^(-6)m^(2)` and it is carrying a current of 3.0A.

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` I = enAV_d = (l)/(t) `
` t = (enAl)/(1) = 2.7 xx 10 ^4 s `
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The number density of conduction electrons in a copper conductor is 8.5xx10^(28) m^(-3) . How long does an electron take to drift from one end of a wire 3.0 m long to its other end ? The area of cross-section of the wire is 2.0xx10^(-6) m^(2) and it is carrying a current of 3.0 A.

A current of 4.8 A is flowing in a copper wire of cross-sectional area 3xx10^(-4) m^(2) . Find the current density in the wire.

The number density of electron in copper is 8.5 xx10^(28)m^(-3) . Find the current flowing through a copper wire of length 20 cm, area of cross section is 1 mm square,when connected to a battery of 3 V. Given the electron mobility =4.5xx10^(-6)m^(2)V^(-1) s^(-1) and electron charge =1.6 xx 10^(-19)C .

A uniform copper wire of length 1m and cross section area 5 xx 10^(-7)m^(2) carries a current of 1A . Assuming that are 8 xx 10^(28) free electron per m^(3) in copper, how long will an electron take to drift from one end of the wire an electron the other. Charge on an electron = 1.6 xx 10^(-19)C

Find the average drift speed of free electrons in a copper wire of area of cross-section 10^(-7) m^(2) carrying current of 1.5 A and having free electron density 8.5 xx 10^(28) m^(-3)

A straight copper-wire of length 100m and cross-sectional area 1.0 mm^(2) carries a current 4.5A. Assuming that one free electron corresponds to each copper atom, find (a) The time it takes an electron to displace from one end of the wire to the other. (b) The sum of electroc forces acting on all free electrons in the given wire. given resistivity of copper is 1.72xx10^(-8)Omega-m and density of copper is 8.96g//cm^(3) .

There is a copper wire of length 2.2 m, of area of cross-section 2.0sq.mm, carrying a current of 6.0A. If the number density of electrons in copper is 8.5 xx10^(28) m^(-3) , find the time taken by an electron to drift from one end to another end of the wire.

What is the drift velocity of electrons in a copper conductor having a cross-sectional area of 5xx10^(-6) m^(2) if the current is 10 A. Assume there are 8.0xx10^(28) "electrons"//m^(3) .

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