5 actice-final-ammodulemem7. A a conducting ring sits in the x-y plane (z = 0). There is a magneticfield in the region pointing in the +z direction. Find the direction of theinduced current in the ring when viewed from above (z i 0) looking downalong the -z direction.a) Ring is expanding.b) Ring is contracting.c) Magnetic field strength is increasing.d) Maguetic field strength is decreasing.deletehomeDDI&+ backspacelo7.8.9.LO

This problem is from electromagnetic. The answer would be option A. Because of Lenz law ,there will…

7. A a conducting ring sits in the x-y plane (z = 0). There is a magnetic field in the region pointing in the +z direction. Find the direction of the induced current in the ring when viewed from above (z , 0) looking down along the -z direction. a) Ring is expanding. b) Ring is contracting. e) Magnetic field strength is increasing. d) Maguetic field strength is decreasing.

7. A a conducting ring sits in the x-y plane (z = 0). There is a magnetic field in the region pointing in the +z direction. Find the direction of the induced current in the ring when viewed from above (z , 0) looking down along the -z direction. a) Ring is expanding. b) Ring is contracting. e) Magnetic field strength is increasing. d) Maguetic field strength is decreasing.

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...

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A ring of ferromagnetic material has a rectangular section. The inner diameter is 15 cm.The outer diameter is 24 cm. And the thickness is 5 cm. There is a coil of 500 turns wound onthe ring. When the coil has a current of 10 A, the flux in the core is 0.0007 Wb. Theaverage length of the ring is Ln=0.66m Determine:a) The magnetomotive force.b) The intensity of the magnetic field and the flux density.c) Reluctance, permeability and relative permeability.
A ferromagnetic core in the shape of a doughnut has a cross-sectional area of 0.11 m2 and an average length of 1.4 m. The permeabil ity of the core is 1.206 × 10-3 Wb/A-t. m. Determine the reluctance of the magnetic circuit
The magnetic structure of Figure Q7 1 has a rerromagnetic core that can be treated as infinitely permeable Air-gap fringing Is negligible Let N= 10 turns, A=02 m and gap length is 0 = 5 x 10 m. The coil is excited by a sinusoidal voltage source that establishes a flux given by p(t) = 0.25stn20t Wb. The resistance of the coil can be neglected Determine the supply voltage, ), the current, (t) and the inductance of the coil, L. %3D Area, A ŁAir Vst) Figure Q7.1. Solutions insert your solutions in the spaces provided below. Give your numerical values to the nearest whole number unless where stated otherwise. Veft) = Volts t) = A. L= H (give your answer correct to 3 decimal places).
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A ferromagnetic core with a relative permeability of 1500 is shown in the given figure. The dimensions are as shown in the diagram, and the depth of the core is 5 cm. The air gaps on the left and right sides of the core are 0.050 and 0.070 cm, respectively. Because of fringing effects, the effective area of the air gaps is 5 percent larger than their physical size. If there are 300 turns in the coil wrapped around the center leg of the core and if the current in the coil is 1.0 A: (a) What are the flux values for the left, center and the right legs of the core? (b) What is the flux density in each air gap? 7 cm -30 cm- 7 em 30 ст 7 cm 30 cm -0.07 cm 300 turns 0.05 cm- 7 сm Core depth = 5 cm
A ferromagnetic core with a relative permeability of 1500 is shown in the given figure. The dimensions are as shown in the diagram, and the depth of the core is 5 cm. The air gaps on the left and right sides of the core are 0.050 and 0.070 cm, respectively. Because of fringing effects, the effective area of the air gaps is 5 percent larger than their physical size. If there are 300 turns in the coil wrapped around the center leg of the core and if the current in the coil is 1.0 A: (a) What are the flux values for the left, center and the right legs of the core? (b) What is the flux density in each air gap? 30 cm- 30 cm 7 cm 30 cm 0.07 cm 300 turns 0.05 cm cm Core depth - 5 cm
A ferromagnetic core with a relative permeability of 1500 is shown in the given figure. The dimensions are as shown in the diagram, and the depth of the core is 5 cm. The air gaps on the left and right sides of the core are 0.050 and 0.070 cm, respectively. Because of fringing effects, the effective area of the air gaps is 5 percent larger than their physical size. If there are 300 turns in the coil wrapped around the center leg of the core and if the current in the coil is 1.0 A: (a) What are the flux values for the left, center and the right legs of the core? (b) What is the flux density in each air gap? 7 cm 30 cm 30cm- 7 cm 30 cm 0.07 cm 300 turns 0.05 cm 7 cm Activate Windows Go to Settings to activate Windows. Core depth - 5 cm
A ferromagnetic core with a relative permeability of 1500 is shown in the Figure. The dimensions are shown in the diagram, and the depth of the core is 5cm. The air gaps on the left and right sides of the core are 0.050 and 0.070 cm, respectively. Because of the fringing effects, the effective area of the air gaps is 5 percent larger than their physical size. If there are 300 turns in the coil wrapped around the center leg of the core and if the current in the coil is 1.0 A, what are the flux values for the left, center, and right legs of the core? What is the magnetic field in each air gap? |7 cm 7 cm 7 cm to 30 cm 30 cm 7 cm 30 cm 0.07 cm 300 turns 0.05 cm 7 cm Core depth = 5 cm
Eddy currents can be induced only in metals that are not ferromagnetic, for example, copper and aluminium. Select one: True False
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Problem 4 The magnetic circuit shown in the figure has two windings and two air gaps. The core can be be of infinite 8: |- Core, u o0 Arca A2 assumed to permeability. dimensions are indicated in the The core Area A N turns figure. inductances of windings 1 and 2 Find the self- 81 Na turas and the mutual inductance between the windings.
constant. 15 cm core depth = 15 cm Problem 2 A ferromagnetic core with a relative permeability of 2000 is shown in Figure. The dimensions are as shown in the diagram, and the depth of the core is 7 cm. The air gaps on the left and right sides of the core are 0.050 and 0.070 cm, respectively. If there are 300 turns in the coil wrapped around the center leg of the core and if the current in the coil is 1.0 A, what is the flux in each of the left, center, and right legs of the core? What is the flux density in each air gap? |7 cm 30 cm 7 cm 7 cm 30 cm 7 cm 30 cm -0,05 cm 300 turns 0.07 cm 7 cm 1|Page