a wire with an area of cross section as 10mm2 has a resistance of 5 ohm, when a potential difference across its ends is 25V. Calculate the drift velocity of electrons. Given the number density of electrons as 5×10 20 electrons per cubic meter.
Answers
Answered by
5
Hey Mate..!!
Here's Your Answer..!!
The formula for drift velocity is I=neav with symbols in their usual meanings as Current in amperes, Number of electrons, charge of electron, area of cross section of wire, and drift velocity
I= V/R
Number of electrons= area x density
You only need to substitute those values in the above formula and find out v from it which will be your drift velocity.
This will fetch you the answer..
Hope This Helps..!!
#BeBrainly❤️
Here's Your Answer..!!
The formula for drift velocity is I=neav with symbols in their usual meanings as Current in amperes, Number of electrons, charge of electron, area of cross section of wire, and drift velocity
I= V/R
Number of electrons= area x density
You only need to substitute those values in the above formula and find out v from it which will be your drift velocity.
This will fetch you the answer..
Hope This Helps..!!
#BeBrainly❤️
Answered by
6
I = neAVd
Where,
n = no° of electrons
A= cross section area
e = charge on e-
Vd= drift velocity
Put all the given values in this formula and get ur answer...TRY URSELF...
Note- units should be same... Convert mm to m.
Try it
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