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- The magnitude J of the current density in a certain wire with a circular cross section of radius R = 2.00 mm is given by J = (3.34 × 108),², with Jin amperes per square meter and radial distance r in meters. What is the current through the outer section bounded by r = 0.926R and r = R? Number i 2.392 Units mASuppose we have a washer-shaped object with conductivity 50 S/m. The inner radius is a = 2 mm, the outer radius is b = 8 mm, and the thickness is 1 mm. We apply a voltage 6 V between the inner and outer edges. Calculate the resulting current flow. Provide your answer in Amps The answer is 1.36A, just need to know how to solve.A student woants to identify the Resistivity of a conducting wire of unknown material. Resistivity is a property of a material that quantifies how strongly it conducts electric current, and it is formulated as, of p= R4 where R is the Resistance (ohms), A cross-sectional area (meters-squared) and I is the length (meters) of the wire. The student runs an experiment on a cylindrical wire of a length l of 2 centimeters and the cross- sectional area A of the wire is 6.1 centimeters-squared. The measurements of the Current is as below Dataset Voltage (Applied, Volts) Current (Measured, Amperes)
- Consider a resistor of resistivity 4.84 x 10-8 n.m. If an electric field of 18 V/m is applied across the resistor and the electron volume concetration in the conductor is 4.39 x 1028 per m3, determine the drift velocity, in mm/s, of the free electron constituting the current. In the dedicated field, enter only the value being asked in the problem. Express answers accurate to four decimal places for the final answer. Do not enter the unit of measurement as it is already indicated in the problem. This specific item DOES NOT require solutions.The magnitude of the current density in a certain lab with a circular cross section of radius R=4.00 mm is given by J= (3.00 × 10^8) r^2, with J in amperes per square meter and radial distance r in meters. What is the current through the outer section bounded by r = 0.500R and r = R ?The magnitude Jof the current density in a certain wire with a circular cross section of radius R = 2.28 mm is given by J = (3.18 × 10®)r2, with J in amperes per square meter and radial distance r in meters. What is the current through the outer section bounded by r = 0.927R andr = R? Number Units
- A conductor has a cross- sectional area of 2.3\( \times \)10-6 m2 and the number of free electrons per unit volume is 8.5\( \times \)1028 electron/m³. When the current is 10 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6\( \times \)1019 C. Select one: O A. 31.97 O B. 0.22 OC. 41.97 OD. 0.42Whte down the e ons th solve, to find the current in eh branh rrounded by a very long conducting sleeve with dimensions shown on the figure below. ** -L5 uC/m, and the outer sleeve has a charge density of 2=-5 µC/m. A 2-meter extension cord is made out of copper wires witha 6 mm diameter. How thick should the wires in a 8-meter extension cord be if it is going to have the same resistance?What is the current through a cylindrical wire of radiusR = 0.1 mm if the current density is J=J0Rr where J0=32000Am2?
- In a 2 ns interval, 10^8 electrons are discharged from a capacitor. What is the average current flow, in mA, due to this discharge?A wire has a radius of 2.5 m. The current density carried by the wire is a function of distance from the center of the wire is given by J(r) = C exp(-r2/L2) (A/m2), where C = 7.6 A/m2, and L = 2.7 m. Calculate the total amount of current carried by the wire, in A. (Please answer to the fourth decimal place - i.e 14.3225)The radii of the two concentric conductive spheres are r1 and r2>r1. The resistivity of the material between the spheres is p. If the total current I from the inner sphere to the outer sphere is I, find the current density J at the point r (vectoral position) in the material between them. Give your answer in terms of (r1, r2, r, p, I).