A length of copper wire carries a current of 11 A, uniformly distributed through its cross section. Calculate the energy density of (a) the magnetic field and (b) the electric field at the surface of the wire. The wire diameter is 2.1 mm, and its resistance per unit length is 3.8 Ω/km. (a) Number i Units (b) Number i Units
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- The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by a rubber layer, an outer conductor, and another rubber layer. In a particular application, the current in the inner conductor is I1 = 1.14 A out of the page and the current in the outer conductor is I2 = 2.90 A into the page. Assuming the distance d = 1.00 mm, answer the following.(a) Determine the magnitude and direction of the magnetic field at point a.find magnitude ut and direction(b) Determine the magnitude and direction of the magnetic field at point b.find magnitude ut and directionThe figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by a rubber layer, an outer conductor, and another rubber layer. In a particular application, the current in the inner conductor is I1 = 1.20 A out of the page and the current in the outer conductor is I2 = 2.86 A into the page. Assuming the distance d = 1.00 mm, answer the following. (a) Determine the magnitude and direction of the magnetic field at point a. magnitude µT direction (b) Determine the magnitude and direction of the magnetic field at point b. magnitude µT directionthe bottom? O A. O C. . O D. H012 6πα Ο Β. μο12 6πα -[-Ĵ] Four very long current-carrying wires are arranged as shown in the figure. What is the force per unit length experienced by the wire at -[+j] MI? 12πα zero [+] a a a I
- In modern Magnetic Resonance Imaging (MRI), the system is resistance free. The resistance-free Magnetic Resonance Imaging (MRI) is created by submerging the solenoid electromagnet into a cryogenic liquid such as liquid helium (He).eHH The temperature of liquid helium (He) is 4 Kelvin (K), which is -4,520 Fahrenheit (F). What type of magnet creates the resistance-free system?Four wires meet a junction. The first carries 4.0 A into the junction, the second carries 5.0 A out of the junction, and the third carries 2.0 A into the junction. What is the magnitude and the direction of the current on the fourth wire? 1.0 A into the junction 1.0 A out of the junction. 3.0 A into of the junction. 3.0 A out of the junction.A copper wire with a square cross-section (side length 5.00 µm) is next to an iron wire with a rightward current of 3.00 A. The two wires are parallel over a region of 20.0 cm, where they are 1.60 cm apart. The iron wire produces a magnetic field on the copper wire. The copper wire is connected to a 5.00 V power source, with current directed rightward. Data of copper: resistivity = 1.68 x 10-8 Ohm m; free electron number density = 8.50 x 1028/m3
- The small currents in axons corresponding to nerve impulses produce measurable magneticfields. A typical axion carries a peak current of 0. 040 μA. What is the strength of the field at a distanceof 0.9 mm?QUESTION 1 https://per.physics.illinois.edu/per/IE/ie.pl?phys112/ie/08/IE_movingcoil X X X X XX X W X X X X XX X X X X X X X X X X X X X X X Lg At t=0, a rectangular coil of resistance R = 2 ohms and dimensions w = 3 cm and L = 8 cm enters a region of constant magnetic field B = 1.6 T directed into the screen as shown. The length of the region containing the magnetic field is LB = 15 cm. The coil is observed to move at constant vėlocity v = 5 cm/s. What is the force required at time t = 0.8 sec to maintain this velocity? Answer in uN (u = micro = EE-06)Question #1. Consider a current-carrying circular wire with radius r. Find the angle between the infinitesimal length dl and some distance h? +z dl h dB +y y Current-carrying circular wire Note: radius r is perpendicular to the screen Select one: O 90° O 0° O 180° O 270°
- Compute for the current across the circuit USING KIRCHHOFF'S LAWIn the figure (Figure 1) the top wire is 1.1 −mm−mm -diameter copper wire and is suspended in air due to the two magnetic forces from the bottom two wires. The current flow through the two bottom wires is 75 AA in each. Calculate the required current flow in the suspended wire. Express your answer using two significant figures. ICu=____________A