Question

Problem 1 A tungsten wire of length 4.0m has a potential difference of 5V applied across it causing a current of 3A to flow in it. The resistivity of the material of the wire is $5.25 \times 10^{-8} \Omega m$. The drift velocity of the electrons causing the current flow in the wire is $8.50 \times 10^{-3} m/s$. (a) Calculate the diameter of the wire. (b) Calculate the density of the electrons in the wire. (c) Now the tungsten wire is replaced by an aluminum wire of 0.800mm diameter so that the current is same as before. Calculate the length of aluminum wire for this purpose (resistivity of aluminum is half the resistivity of tungsten)

          Problem 1
A tungsten wire of length 4.0m has a potential difference of 5V applied across it causing a current of 3A to flow in it. The resistivity of the material of the wire is $5.25 \times 10^{-8} \Omega m$. The drift velocity of the electrons causing the current flow in the wire is $8.50 \times 10^{-3} m/s$.
(a) Calculate the diameter of the wire.

(b) Calculate the density of the electrons in the wire.

(c) Now the tungsten wire is replaced by an aluminum wire of 0.800mm diameter so that the current is same as before. Calculate the length of aluminum wire for this purpose (resistivity of aluminum is half the resistivity of tungsten)

problem 1 a tungsten wire of length 40m has a potential difference of 5v applied across it causing a current of 3a to flow in it the resistivity of the material of the wire is 525 times 10 8 48084

Added by Ricardo A.

Question

Please give Ace some feedback