7. A dielectric material must be: (a) Semi-conductor (b) Isolator C) Good conductor (d) All the above 8. Which of the following is not a vector? (a) Magnetic flux density B (b) Magnetic flux - (c) Magnetic field intensity H (d) all the above 9. "The total electric flux through any closed surface surrounding charges is equal to of charge enclosed". The statement is associated with: (a) Coulomb's square law (b) Gauss's law © Maxwell's first law (d) Maxwell's second law

7. A dielectric material must be: (a) Semi-conductor (b) Isolator C) Good conductor (d) All the above 8. Which of the following is not a vector? (a) Magnetic flux density B (b) Magnetic flux - (c) Magnetic field intensity H (d) all the above 9. "The total electric flux through any closed surface surrounding charges is equal to of charge enclosed". The statement is associated with: (a) Coulomb's square law (b) Gauss's law © Maxwell's first law (d) Maxwell's second law

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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In this section you will draw the electric field liness of several simple charge configurations. While you will be able to draw only a 2-dimensional picture, keep in mind that these problems are inherently three dimensional. For each case: 1. Draw the electric field lines. 2. Draw the Gaussian surface for the flux calculation. 3. State whether the flux is positive, negative, or zero.
C) Briefly explain the three (3) classification of ferromagnetic materials based on the effect by the magnetic field.
4. Induced current occurs when the magnetic flux through a conducting loop changes. This can happen when a) the magnetic field magnitude changes, b) the magnetic field direction changes, c) the orientation of the loop changes with respect to the magnetic field, or d) if the area of the loop changes. Draw a picture of a situation where each of the above things occurs.
5. a) According to this figure, if it's possible to create magnetic monopoles in a spherical closed surface, then find out the amount of total magnetic flux. N N N N
1: What is the space around a current-carrying conductor, in which its magnetic effect can be experienced called? A) Electric field. B) Magnetic pole. C) Magnetic field. D) Charge distribution 2: What is the force exerted by a stationary charge when it is placed in a magnetic field? A) Zero. B) Maximum. C) Minimum. D) Depends on the strength of the magnetic field. 3: When a charge moves parallel or antiparallel to the direction of the magnetic field, it experiences a maximum force. State true orf alse. A) True. B) False. 4: Find the magnetic force when a charge 3,5C with flux density of 4 units is having a velocity of 2m/s. C) 7. D) 32. A) 14. B) 28. 5: When currents are moving in the same direction in two conductors, then the force will be A) Attractive, B) Repulsive, C) Retracting. D) Opposing 6:if flow of electric current is parallei to magnetic field, the force will be A) Min, 7: If a material is ferromagnetic, what shall be the value of ? B)Max, C)Negutive, D)Zero A) Negative. B)…
An electromagnet shown below has a cross section area of 10 cm2 with a mean length of iron path of 100cm and mean length of airgap is 0.4cm . It is excited by a coil of 1000 turns of conductor windings. When a current of 1A is provided to the coil and the relative permeability of iron is 1300, then find the magnetic flux in the circuit. Select one: Oa. 1.25Wb O b. None of these Oc.0.00027Wb O d. 027W.
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Find the magnetic flux density when a point from a finite current length element of current 0.5A and radius 100 nm. 2.0 0.0 1.0 none of the above 0.5
18 - The magnetic force ( ) on a curved current-carrying wire in a uniform magnetic field is equal to ........... A) B) C) None of them D) E)
What is a magnetic field? a) it is the space araund a magnet, or the space in whic magnetic forces act, b) it is the magnetic force which has definite direction at all points along a curved line from the north to south pole, c) it is the ability of a magnetic material to be magnetized easily, d) none of above Wihch of the following true with regards to magnetic materials. A) like polarities repel, B) unlike polarities attract, C) both a and b, D) none According to weber is theory of magnetism, a magnetic material_____. A) consust of one large single magnetic molecule, B) is made up from many tiny magnetic molecules, C) consist of one single nonmagnetic molecule, D) none
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