If a 15g irregular shaped object is submerged in a graduated cylinder of water, the level rises from 10 ml to 25 ml, what is the
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Answer: The electron number density (the number of electrons per unit volume) in the wire is .
Explanation:
Given: Current = 5.0 A
Area =
Density = 2.7 , Molar mass = 27 g
The electron density is calculated as follows.
where,
= density
M = molar mass
= Avogadro's number
Substitute the values into above formula as follows.
Thus, we can conclude that the electron number density (the number of electrons per unit volume) in the wire is .