Also, what is the difference between motional EMF and transformer EMF? Explain briefly.
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Also, what is the difference between motional EMF and
transformer EMF? Explain briefly.
A long, straight,...
Explain the difference between transformer electromotive force and motional electromotive force in electromagnetic. Write down the...
Explain the difference between transformer electromotive force
and motional
electromotive force in electromagnetic. Write down the integral
equation for both
quantities.
QUESTION 3 (a) Explain the difference between transformer electromotive force and motional electromotive force in electromagnetic. Write down the integral equation for both quantities. [4 marks] (b) A circular plate with radius, a meter at x-y plane rotates in an anti-clockwise direction with a uniform angular velocity, o meter/second along the z-axis. The plate is placed in a uniform...
A hollow, circular cylindrical conductor in freespace of infinite length. The inner and outer radius are...
A hollow, circular cylindrical conductor in freespace of infinite length. The inner and outer radius are b and c respectively, from the center z axis. It carries a current I in z direction. (a) Find the vector current density J. (b) Use Ampere's Law to find the magnetic field B and H outside the conductor(r>c). (c) Find B inside the hollow interior(r<b). (d) Find B in the conductor(b<r<c).
A very long, straight conductor located along the z axis has a circular cross section of radius 10 cm
5-15 Exercises: 5.16. A very long, straight conductor located along the z axis has a circular cross section of radius 10 cm. The conductor carries 100 A in the z direction which is uniformly distributed over its cross section. Find the magnetic field intensity (a) inside the conductor and (b) outside the conductor. Sketch the magnetic field intensity as a function of the distance from the center of the conductor. 5-15 Exercises: 5.18. A fine wire wound in the form of...
18. A infinitely long cable consists of a solid cylindrical inner conductor of radius a, surrounded...
18. A infinitely long cable consists of a solid cylindrical inner conductor of radius a, surrounded by a concentric cylindrical conducting shell of inner radius b and outer radius c. The inner conductor has a non-uniform current density (r) = ar in the z direction shown. a is a positive constant with units A-m'. The outer conductor has a uniform current density: Jr) = -B (in negative z). B has the same unit as a. The conductors carry equal and...
Answer: 3. (I) b (II) a An infinitely long, solid, cylindrical conductor has a radius of...
Answer: 3. (I) b (II) a
An infinitely long, solid, cylindrical conductor has a radius of 1 meter and is surrounded by air. It carries current out of the page. The current density J inside the conductor varies with radial distance from the central axis according to J(r) = 5r^2 where r is in meters and J is in Amps per square meter. (worth 10% of exam) Find the magnitude of the magnetic field at point A, situated inside the...
In physical wires that carry current, the majority of the current will actually travel very close...
In physical wires that carry current, the majority of the current will actually travel very close to the the outer edge of the wire (in the same way that static charge deposited on a conductor will spread across its surface rather than its interior). One way to model the physical flow of charge through a cylindrical wire of radius R is with the following current density function: with Jo = 2.5 × 106A/m 2. Note that this is only true...
Computer cables create little to no magnetic field because they are comprised of closely spaced wires...
Computer cables create little to no magnetic field because they are comprised of closely spaced wires carrying oppositely directed currents. (True -False) The magnetic field of a short segment of current-carrying conductor is due primarily to the random motions of the charges moving through the segment. (True -False) A current element that is directed out of the page produces magnetic field lines that form clockwise circles. (True- False) Iron, nickel, and cobalt have relative permeabilities that are much larger than...
An infinitely long, straight, cylindrical wire of radius R carries a uniform current density J. Using...
An infinitely long, straight, cylindrical wire of radius R carries a uniform current density J. Using symmetry and Ampere's law, find the magnitude and direction of the magnetic field at a point inside the wire. For the purposes of this problem, use a cylindrical coordinate system with the current in the +z-direction, as shown coming out of the screen in the top illustration. The radial r-coordinate of each point is the distance to the central axis of the wire, and...
2. A long solenoid carrying a time-dependent current I(t) is wound on a hollow cylinder whose axis of symmetry is the z...
2. A long solenoid carrying a time-dependent current I(t) is wound on a hollow cylinder whose axis of symmetry is the z-axis. The solenoid's radius is a, and it has n turns per metre. (a) * Write down the magnetic intensity H(ที่ t) and magnetic field B(r,t) everywhere. What is the energy density in the magnetic field inside the solenoid? (b Find the electric field E(F,t) everywhere using Faraday's law in integral form. (c) * Find the magnetic vector potential...
Consider a long coaxial cable carrying equal and opposite currents (i) on the perfectly conducting inner...
Consider a long coaxial cable carrying equal and opposite currents (i) on the perfectly conducting inner and outer conductors with air spacing, where Transverse Electro Magnetic Waves (TEM) exists in the medium. a) Determine the magnetic field intensity between the conductors b) What is the magnetic field at point P outside of the cable at a distance r from the axis? Justify your answer by the associated equations. c) Sketch the E and H field vector orientations in the cylindrical...
Explain the difference between transformer electromotive force
and motional
electromotive force in electromagnetic. Write down the integral
equation for both
quantities.
QUESTION 3 (a) Explain the difference between transformer electromotive force and motional electromotive force in electromagnetic. Write down the integral equation for both quantities. [4 marks] (b) A circular plate with radius, a meter at x-y plane rotates in an anti-clockwise direction with a uniform angular velocity, o meter/second along the z-axis. The plate is placed in a uniform...
18. A infinitely long cable consists of a solid cylindrical inner conductor of radius a, surrounded by a concentric cylindrical conducting shell of inner radius b and outer radius c. The inner conductor has a non-uniform current density (r) = ar in the z direction shown. a is a positive constant with units A-m'. The outer conductor has a uniform current density: Jr) = -B (in negative z). B has the same unit as a. The conductors carry equal and...
Answer: 3. (I) b (II) a
An infinitely long, solid, cylindrical conductor has a radius of 1 meter and is surrounded by air. It carries current out of the page. The current density J inside the conductor varies with radial distance from the central axis according to J(r) = 5r^2 where r is in meters and J is in Amps per square meter. (worth 10% of exam) Find the magnitude of the magnetic field at point A, situated inside the...
In physical wires that carry current, the majority of the current will actually travel very close to the the outer edge of the wire (in the same way that static charge deposited on a conductor will spread across its surface rather than its interior). One way to model the physical flow of charge through a cylindrical wire of radius R is with the following current density function: with Jo = 2.5 × 106A/m 2. Note that this is only true...
An infinitely long, straight, cylindrical wire of radius R carries a uniform current density J. Using symmetry and Ampere's law, find the magnitude and direction of the magnetic field at a point inside the wire. For the purposes of this problem, use a cylindrical coordinate system with the current in the +z-direction, as shown coming out of the screen in the top illustration. The radial r-coordinate of each point is the distance to the central axis of the wire, and...
2. A long solenoid carrying a time-dependent current I(t) is wound on a hollow cylinder whose axis of symmetry is the z-axis. The solenoid's radius is a, and it has n turns per metre. (a) * Write down the magnetic intensity H(ที่ t) and magnetic field B(r,t) everywhere. What is the energy density in the magnetic field inside the solenoid? (b Find the electric field E(F,t) everywhere using Faraday's law in integral form. (c) * Find the magnetic vector potential...
Consider a long coaxial cable carrying equal and opposite currents (i) on the perfectly conducting inner and outer conductors with air spacing, where Transverse Electro Magnetic Waves (TEM) exists in the medium. a) Determine the magnetic field intensity between the conductors b) What is the magnetic field at point P outside of the cable at a distance r from the axis? Justify your answer by the associated equations. c) Sketch the E and H field vector orientations in the cylindrical...
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