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A copper wire of radius 0.1 mm and resis...

A copper wire of radius 0.1 mm and resistance `1 k Omega` is connected across a power supply of 20 V. (i) How many electrons are transferred per second between the supply and the wire at one end ? (ii) Write down the current density in the wire.

Text Solution

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`1.25xx10^(17)`
(b) `(2)/(pi)xx10^(6)A//m^(2)`
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Knowledge Check

  • A wire of resistance 16Omega is bent in to a circle and a cell of e.m.f. 2V and internal resistance 1Omega is connected between two points of wire, a quarter circumference apart. The current in each segment of wire is

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