9. If0.634C ofcharge crosses cross-sectional area of a in 0.41 seconds, calculate the average current flowing...
Acceleration EMF (a) A long straight rod with cross sectional area A and conductivity σ accelerates parallel to its length with acceleration a. Write down the Drude-like equation of motion for the average velocity v of an electron of mass m in the rod relative to the motion of the rod itself. Show that, in the absence of an external electric field, there is a steady solution that corresponds to a current 1 Aơma/e flowing in the wire. Assume that...
The maximum rated current for a copper wire of cross-sectional
area 2 mm^2 is 20A. (a) What is the corresponding current density
in A/m^2? (b) On the assumption that each copper atom contributes
one conduction electron, calculate the electronic drift velocity
corresponding to this current density. (Avogadro's number =
6.02E10^23 atoms per mole; atomic weight of copper = 63.5; density
of copper = 8.92 g/cm^3.) (c) Use the observed conductivity to
calculate the average collision time for an electron in...
if a pipe flowing water has a cross sectional area nine times greater at point 2 than point 1, what would be the relation of flow of speed at the two points
A net charge of 20 C passes through the cross-sectional area of a wire in 1.7 min . What is the current in the wire?
An aluminum wire has a mobile charge density is 8.0e28 electrons/m3, and a cross-sectional area of 2.3e-6 m2. When a current flows through the wire, the average drift speed of the electrons is 1.7e-4 m/s. What is the current in the wire?
Question 9 (1 point) A long straight gold wire has a cross-sectional area of 5.69 x10-7m2. It carries a current f 2.98 A. What is the potential difference between two points in the wire 32.4 m apart? Provide your answer in Volts (V) Your Answer: Answer
water is flowing in a cylindrical pipe of varying circular cross sectional area and at all points the water completely fills the pipe a. at one point in the pipe, the radius is 0.150 m what is the speed of thecwater at this point if the volume flow rate in the pipe is 1.20 m^3/s ? b. at a second point in the pipe the water spped is 3.80 m/s What is the radius of the pipe at this point?...
QUESTION 7 A current-carrying ohmic metal wire has a cross-sectional area that gradually becomes smaller from one end (A) of the wire to the other end (B). A current / is passing through the wire. How does the current density vary along the wire as the area becomes smaller from end (4) to end (B)? A B Jincreases. decreases Not enough information OJ remains constant
A wire is 0.79 m long and 0.77 mm2 in cross-sectional area. It carries a current of 4.1 A when a 2.0 V potential difference is applied between its ends. Calculate the conductivity ? of the material of which this wire is made.
A wire has a current density of 7.43 Times 10^6 A/m^2. If the cross-sectional area of the wire is 1.99 mm^2, current does the wire carry? With this current, how much time is required for 5.87 Times 10^20 electrons to pass any point on the wire?