When placed in an external magnetic field, a material where the induced magnetic field is opposite the external field is known as
A. Paramagnetic B. Diamagnetic C. Ferromagnetic D. Electromagnetic E. There is no name for this type of material
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When placed in an external magnetic field, a material where the induced magnetic field is opposite the external field is known as
When a certain paramagnetic material is placed in an external magnetic field of 1.50T , the...
When a certain paramagnetic material is placed in an external magnetic field of 1.50T , the field inside the material is measured to be 1.5023T . Part A The relative permeability of this material is The relative permeability of this material is 1.0015. 0.0015. 1. 10.015 Part B The magnetic permeability of this material is The magnetic permeability of this material is 0T.m/A. 1.259.10?7T.m/A. 1.259.10?6T.m/A. 1.259.10?5T.m/A.
A magnetic dipole is in a nonuniform magnetic field The dipole will always be attracted to...
A magnetic dipole is in a nonuniform magnetic field The dipole will always be attracted to the region with a stronger magnetic field always be repelled from the region with a stronger magnetic field might be repelled, but will eventually flip over and be attracted to the region with a stronger magnetic filed might be attracted but could flip over and then be repelled from the region with a stronger magnetic field For distance d m uch larger than the...
Select the appropriate answer 1-The influence of magnetic field acting on a stationary charged particle is...
Select the appropriate answer 1-The influence of magnetic field acting on a stationary charged particle is to: a -accelerate the particle. b- change its direction of motion. c-both accelerate and change direction of motion. d- none of the above . ----------- 2-The magnetic field Hr inside a infinite length conductor aligned to the z-axis is equal to all values of r smaller than the conductor radius a: a- True b-False ---------- 3- If the relative magnetic permeability Ur of material...
Select the correct answer for each Q1. Two parallel wires carrying opposite direction currents will (a)...
Select the correct answer for each Q1. Two parallel wires carrying opposite direction currents will (a) be attracted to each other (e) repel each other (b) not affect each other (d) attract, then repel each other Q2. Ferrites are...................... materials (a) paramagnetic (b) diamagnetic (c) ferromagnetic (d) bipolar Q3. Mutual inductance between two magnetically-coupled coils depends on (a) Permeability of the core (c) Cross-sectional area of their common core (b) The number of their turns (d) All choices Q4. Which...
Consider a canonical ensemble of ? paramagnetic particles of magnetic moment ? in an external magnetic...
Consider a canonical ensemble of ? paramagnetic particles of
magnetic moment ? in an external magnetic field B and find
a. An expression for the average magnetic moment per
particle
b. The total magnetization.
c. Demonstrate the Curie’s law of paramagnetism that predicts
that at high temperature the magnetization of the material is
proportional to the ratio between the external field and the
temperature
Consider a canonical ensemble of N paramagnetic particles of magnetic moment μ in an external magnetic...
A loop is oriented in external magnetic field as shown in the picture. A magnetic field...
A loop is oriented in external magnetic field as shown in the picture. A magnetic field suddenly vanishes. When viewed from north, what is the sense of the induced current in this loop as the field fades? N B W E S the induced current flows clockwise the induced current flows counterclockwise the current flows clockwise initially, and then it flows counterclockwise before stopping there is no induced current in this loop
5. (25pts) In the figure, sole is placed in a uniform external magnetic fe resistance of...
5. (25pts) In the figure, sole is placed in a uniform external magnetic fe resistance of 120 Q. The magnetic field is a solenoid with 350 turns, a diameter of 3.7 cm, and length 45 em enoid has a (1InT/s)t +21nT orm external magnetic field directed out of the page. The sol given by the equationB(O) B) What is thedirect magnitude of the induced current? B) What is the of the induced current in the solenoid? Explain your reasoning. emagnitude...
2. Total Current Density The magnetic field , B, in a ferromagnetic material is a known...
2. Total Current Density The magnetic field , B, in a ferromagnetic material is a known function of spatial coordinates. (a) Prove that the total (conduction plus magnetization) volume current density in linear material, total = + m, can be expressed in terms of B as follows: total = x B/MO. (b) Specifically, compute total for B(x,y,z) = (2x +z)/y28+ (2/y)ý + (x + 2y)2 T. (c) In a uniform Ē field, assume there exists a volume current density T...
When a current is induced by a changing magnetic field B1, the current always produces a...
When a current is induced by a changing magnetic field B1, the current always produces a second magnetic field B2 such that a. the magnetic fields add together and the total magnetic field increases in strength. b. the magnetic fields oppose each other. c. there is no way to tell the relationship between the magnetic fields. d. B2 is perpendicular to B1.
[10] 36. Which of the following is (are) FALSE? Give your answer in the form "x"...
[10] 36. Which of the following is (are) FALSE? Give your answer in the form "x" or "x, y, ...". (a) A transformer is a device that can be used to increase or decrease the amplitude of an alternating voltage. (b) A paramagnetic material is repelled by the poles of a magnet. (c) In vacuum, all electromagnetic waves travel at the same speed. (d) A ferromagnetic materials that attracts other metals is called a permanent magnet (e) A diamagnetic material...
A magnetic dipole is in a nonuniform magnetic field The dipole will always be attracted to the region with a stronger magnetic field always be repelled from the region with a stronger magnetic field might be repelled, but will eventually flip over and be attracted to the region with a stronger magnetic filed might be attracted but could flip over and then be repelled from the region with a stronger magnetic field For distance d m uch larger than the...
Select the correct answer for each Q1. Two parallel wires carrying opposite direction currents will (a) be attracted to each other (e) repel each other (b) not affect each other (d) attract, then repel each other Q2. Ferrites are...................... materials (a) paramagnetic (b) diamagnetic (c) ferromagnetic (d) bipolar Q3. Mutual inductance between two magnetically-coupled coils depends on (a) Permeability of the core (c) Cross-sectional area of their common core (b) The number of their turns (d) All choices Q4. Which...
Consider a canonical ensemble of ? paramagnetic particles of
magnetic moment ? in an external magnetic field B and find
a. An expression for the average magnetic moment per
particle
b. The total magnetization.
c. Demonstrate the Curie’s law of paramagnetism that predicts
that at high temperature the magnetization of the material is
proportional to the ratio between the external field and the
temperature
Consider a canonical ensemble of N paramagnetic particles of magnetic moment μ in an external magnetic...
A loop is oriented in external magnetic field as shown in the picture. A magnetic field suddenly vanishes. When viewed from north, what is the sense of the induced current in this loop as the field fades? N B W E S the induced current flows clockwise the induced current flows counterclockwise the current flows clockwise initially, and then it flows counterclockwise before stopping there is no induced current in this loop
5. (25pts) In the figure, sole is placed in a uniform external magnetic fe resistance of 120 Q. The magnetic field is a solenoid with 350 turns, a diameter of 3.7 cm, and length 45 em enoid has a (1InT/s)t +21nT orm external magnetic field directed out of the page. The sol given by the equationB(O) B) What is thedirect magnitude of the induced current? B) What is the of the induced current in the solenoid? Explain your reasoning. emagnitude...
2. Total Current Density The magnetic field , B, in a ferromagnetic material is a known function of spatial coordinates. (a) Prove that the total (conduction plus magnetization) volume current density in linear material, total = + m, can be expressed in terms of B as follows: total = x B/MO. (b) Specifically, compute total for B(x,y,z) = (2x +z)/y28+ (2/y)ý + (x + 2y)2 T. (c) In a uniform Ē field, assume there exists a volume current density T...
[10] 36. Which of the following is (are) FALSE? Give your answer in the form "x" or "x, y, ...". (a) A transformer is a device that can be used to increase or decrease the amplitude of an alternating voltage. (b) A paramagnetic material is repelled by the poles of a magnet. (c) In vacuum, all electromagnetic waves travel at the same speed. (d) A ferromagnetic materials that attracts other metals is called a permanent magnet (e) A diamagnetic material...
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