a) What is the resistance of the wire? (see attachment for diagram and full questions)

b) If a voltage of 1mV=10^-3volts is applied across the wire, what is the current (I) and current density (J) along the wire?

c) Taking 1 electron per atom as conducting (we will justify later, why most of the Cu e-`s do not contribute), so the density of conducting e- is 1 Patomic, calculate the drift velocity of the e`s

d) Calculate the (random thermal mean squared velocity).

e) If an e- fell through a potential difference at 1mV without any collision (ballistic motion), it would gain a kinetic energy of (e)(1mV)=1^-3 eV.
Calculate N_ballistic, and N_drift/N_ballistic

Copper wire length, iron wire resistance, cost of hall light. ... The expert examines the copper wire length, iron wire resistance and the cost of hall light. ...

... 3. Determine the resistance of 16-gauge copper wire with a length of 35m. ... 3. Determine the resistance of 16-gauge copper wire with a length of 35m. Ω ∗ . ...

... want to use hookup wire whose total resistance is small by comparison, say, 0.25 Ohm. If the speaker is to be 15 m away, what diameter copper wire should be ...

... 2- ) a piece of copper wire is cut into 10 equal parts. These parts are connected in parallel. How will the combined resistance of the parallel combination ...

... a resistance of 580 Ω. A voltage of 120 V is connected across the filament. How much current is in the filament? 13. A cylindrical copper cable carries a ...

... up such that there is no tension in the connecting wires. ... in the figure, prove that the resistance Rab = (27 ... with frequency f = 1 MHz in copper (resistivity 1.72 ...

... What about two copper wires with different grain sizes, work hardening histories or ... 5) As the temperature in the coil increases, its resistance increases (by ...

... The density of copper is 9 g/cm^3 and its molecular ... What is the current density in the wire What is the ... is the cross sectional area, R is the resistance and d ...