A dense bundle of insulated cables is shown in Figure Q2a. Each cable carries a DC current as shown where I is the current. The direction of the currents are indicated with currents flowing into the page taken as positive. i) For I = 2 A obtain the applied field strength at a distance of 1.5 cm from the bundle. ii) The bundle is encased in a medium of unknown permeability. The resultant field at a radius of 1 cm is measured to be 130 uT when I = 1.5 A. Determine the material's relative permeability. 0.2 I +) 1.5 I +) 0.75 I +) 0.7 I 0.4 I 1.2 I Figure Q2a

A dense bundle of insulated cables is shown in Figure Q2a. Each cable carries a DC current as shown where I is the current. The direction of the currents are indicated with currents flowing into the page taken as positive. i) For I = 2 A obtain the applied field strength at a distance of 1.5 cm from the bundle. ii) The bundle is encased in a medium of unknown permeability. The resultant field at a radius of 1 cm is measured to be 130 uT when I = 1.5 A. Determine the material's relative permeability. 0.2 I +) 1.5 I +) 0.75 I +) 0.7 I 0.4 I 1.2 I Figure Q2a

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

3 Biot-Savart for Curved Wire A segment of a closed current loop is shown in the following figure. Compute the magnetic field at the center of the semi-circle due to the straight and curved segments shown. b (Technically, to use the Biot-Savart law for currents in a wire, the current must be constant, and the wire must form a closed loop. As a result, there will be a contribution to the magnetic field at the origin due to the parts of the closed loop that are not shown. However, here we assume that the not- shown part of the loop is far enough away that they can be neglected.)
Nb3Sn and GaV are candidates for a superconducting application, when the magnetic field is 150,000 Oe. Which of them would require the lowest temperature in order to be a superconductor?
In the following figure a wire loop with a current I1 that is near a long straight current carrying wire with a current l2. a) Label the direction of the magnetic field from the long straight wire in the region of the current loop. b) Draw the direction of the force from the long straight wire acting on each segment of the current loop (left, top, right, and bottom segments). c) In which direction is the net force on the wire loop from the straight wire? long straight wire wire loop
4
This question is about electrical conductivity: 1. How are electrical properties different for isotropic 3D bulk and 2D sheets?
Q4// A ring of a mean diameter 30 cm and cross sectional area of 15 cm2 is made up of semi – circular sections of cast iron and cast steel. If each joint has an air gap of 0.25 mm. Find amper turns required to produce a flux of 7 x 10 weber in the magnetic circuit. The relative permeability of steel and iron are 852 and 165 respectively. - OA- Amper turns required= 1105 OB- Amper turns required= 1995 OC- Amper turns required= 2250 OD- Amper turns required= 3150 OE- None of above ارسال الاجابة
Pls answer b
Calculate the magnetic induction in air at a point 5 cm from a long straigh wire carrying a current of 15 A. As shown in the figure below, two long parallel wires are 10 cm apart in a and carry currents of 6.0 A and 4.0 A. C D 10 cm 6.0 A 4.0 A Show that the force per unit length on wire C can be expressed as 24.0 Ho 0.20 a
Pr1. A metal rod having a mass m and length e has resistance R. The rod hangs from two vertical metallic wires of length l in a uni- form vertical magnetic field B of a horseshoe magnet (see figure). The wires have negligib- le resistance. An AC voltage source is connec- ted between the wires which provides a voltage U(t) = Uo cos wt, where Uo and w are constants. U(t) S m IN a) Show that for small angular displacements p the motion of the rod can be described by the cquation U (t) = aö + Bộ + VP, and express the constants a, 3, y in terms of quantities m, l, B, R and the gravitational ac- celeration g. b) At a certain frequency w = wo the ampli- tude of the oscillations of the rod becomes large and the equation above does not describe the motion anymore. Estimate the frequency wo.
Draw the magnetization curve of magnetic materials for varying dc supply (0 to Vm), Ac supply, show the magnetic dipoles for each part of the curve.
A magnetic core with an air gap is shown below. For a relative permeability is 9500, and the space free permeability is 4Ttx107 H/m. Find the reluctance of the left leg and the top side of the core. Ignore the gap in your calculations. 10 cm 0.1 cm gap 20 cm 5 cm 5 cm 40 cm 5 cm core depth = 10 cm Select one: a. Rjeft = 3.770 KA.t./Wb , Rtop = 4.607 KA.t/Wb b. None c. Rieft = 377.0 A.t./Wb , Rtop = 460.7 A.t/Wb d. Rjeft = 325.1 A.t./Wb , Rtop = 402.3 A.t/Wb ----------
Consider two infinitely long parallel wires. The wires are separated by a distance of 10 cm. Both wires carry a current of 5 A but in opposite directions. Compute the force per unit length on wire 2 due to the current in wire 1.