27. A wire with a length of 150 m and a radius of 0.30 mm carries...
A segment of wire has a radius R= 27 mm and length L = 39 cm that carries a uniform current density J = 470 A/m2. What is the current i, flowing through a circular loop of radius r = 18.5 mm offset from the central axis of the wire by d = 3.5 mm? Express your answer using one decimal place. You answer should be in mA.
When 115 V is applied across a wire thatis 11 m long and has a 0.30 mm radius, thecurrent density is 1.3 104 A/m2. Find the resistivityof the wire. 1·m
Chapter 30, Problem 066 A circular loop of wire 82 mm in radius carries a current of 115 A. Find the (a) magnetic field strength and (b) energy density at the center of the loop. (a) Number Units (b) Number Units
Chapter 30, Problem 066 A circular loop of wire 78 mm in radius carries a current of 114 A. Find the (a) magnetic field strength and (b) energy density at the center of the loop. (a) Number Units (b) Number Units
A d = 3.71 mm diameter wire carries an electric current of I = 18.2 A when the electric field is E = 5.72 times 10^-2 V/m along the wire. What is the current density? What is the conductivity of the wire? What is the resistivity of the wire?
A certain cylindrical wire carries current. We draw a circle of radius r around its central axis in Figure (a) to determine the current i within the circle. Figure (b) shows current i as a function of r2. The vertical scale is set by is = 5.0 mA, and the horizontal scale is set byr2 = 5.3 mm2. (a) Is the current density uniform? (b) If so, what is its magnitude? (Vu)! m2 (mm) (b) (b) Number Units
[3] A wire of radius a carries a uniform current density given by which is directed out of the page as shown. The wire carries a total current I. (a) Which direction does the magnetic field circulate around the wire? (circle the correct answer below). (b) Calculate the magnitude of the current density in terms of I and a (c) Showing complete details, including sketches as necessary, calculate the vector magnetic field inside the wire in terms of I, a...
a.) A 33.9-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.00 V is applied across the length of the wire, determine the current in the wire. b.) If the wire is heated to 40.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?
(a) A 35.3-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in this table.) 1.48 A (b) If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire?
Please show your work. Problem 8 Objective #2: An infinitely long cylindrical wire with a radius of 5 cm carries a current with a non-uniform current density given by the equation: 2 where ρ is the radial distance from the center of the wire. If the resistance over a segment of the wire is 2 Ω, what is the magnitude of the difference in electric potential between each end of that segment? Answers: (a) 10㎶ (b) 20 MV (c) 40...