for Antenna which comes first Electric Field or magnetic field?
for Antenna which comes first Electric Field or magnetic field?
Homework Answers
Solution) It depends upon the construction to detect electric fields or magnetic fields first . So if an antenna is designed to detect electric field first then it is made of rods and plates where as if antenna is designed to detect magnetic field then it is made of loops of wire .
If the electric field in an electromagnetic wave 100 mm from a radio-emitting antenna has a...
If the electric field in an electromagnetic wave 100 mm from a radio-emitting antenna has a maximum magnitude of 4.0 × 105 V/m what is the maximum magnetic field magnitude 600 m from the antenna?
Consider a magnetic force acting on an electric charge in a uniform magnetic field. Which of...
Consider a magnetic force acting on an electric charge in a uniform magnetic field. Which of the following statements are true? A magnetic force is exerted on an electric charge moving through a uniform magnetic field. The direction of the magnetic force acting on a moving charge in a magnetic field is perpendicular to the direction of the magnetic field. The direction of the magnetic force acting on a moving electric charge in a magnetic field is perpendicular to the...
A dipole antenna radiates electromagnetic waves. The frequency is f. (A) An observer measures magnetic field...
A dipole antenna radiates electromagnetic waves. The frequency is f. (A) An observer measures magnetic field oscillations with amplitude Bo. Then what is the amplitude of electric field oscillations at that position? (B) Calculate the Poynting vector. [f = 1.7 Hz; Bo = 1.0 mT] (A) Submit Answer Tries 0/25 (B)
Magnetodynamics Problem 1 (Induced Electric Field by Circular Magnetic Field) Consider a uniform magnetic field which...
Magnetodynamics Problem 1 (Induced Electric Field by Circular Magnetic Field) Consider a uniform magnetic field which points into the page and is confined to a circular region with radius R. Suppose the magnitude of B increases with time, i.e. dB/dt > 0. Find the induced electric field everywhere due to the changing magnetic field.
Magnetodynamics Problem 1 (Induced Electric Field by Circular Magnetic Field) Consider a uniform magnetic field which...
Magnetodynamics Problem 1 (Induced Electric Field by Circular Magnetic Field) Consider a uniform magnetic field which points into the page and is confined to a circular region with radius R. Suppose the magnitude of B increases with time, i.e. dB/dt > 0. Find the induced electric field everywhere due to the changing magnetic field.
The far-zone electric field of an antenna can be approximated by P.11-add3 The far-zone electric field...
The far-zone electric field of an antenna can be approximated
by
P.11-add3 The far-zone electric field of an antenna can be approximated by le jkr Je cos? 0, 0sos E. = { r otherwise E = 0. Find The half power beamwidth in the xz- and yz- planes. The directivity Do. The approximate directivity Do using equation Do = 0.787 the (3.108) on p. 7, Lec_22. (Bu12), (Bv2) -nimi 47 / XZ yZ
In the following figure, the magnetic field is decreasing. Which figure represents the induced electric field?...
In the following figure, the magnetic field is decreasing. Which figure represents the induced electric field? Select one: a. b. c. * C
An electron travels through a region with non-zero electric and magnetic fields. The electric field is...
An electron travels through a region with non-zero electric and magnetic fields. The electric field is directed into the page (-k cap), the electron is moving to the right (+ i cap), and the net force on the electron is zero. a) Which component of the magnetic field must be zero? b) Which component of the magnetic field must be non-zero?
An AC voltage source attached to a long metal antenna causes the antenna to emit electromagnetic radiation. Is the electric field at point A at time t zero or non-zero?
An AC voltage source attached to a long metal antenna causes the antenna to emit electromagnetic radiation. Is the electric field at point A at time t zero or non-zero?A. zeroB. non-zero
A time varying electric field will create a: a. circulating magnetic field b. a linear magnetic...
A time varying electric field will create a: a. circulating magnetic field b. a linear magnetic field c. not enough information is given
A dipole antenna radiates electromagnetic waves. The frequency is f. (A) An observer measures magnetic field oscillations with amplitude Bo. Then what is the amplitude of electric field oscillations at that position? (B) Calculate the Poynting vector. [f = 1.7 Hz; Bo = 1.0 mT] (A) Submit Answer Tries 0/25 (B)
Magnetodynamics Problem 1 (Induced Electric Field by Circular Magnetic Field) Consider a uniform magnetic field which points into the page and is confined to a circular region with radius R. Suppose the magnitude of B increases with time, i.e. dB/dt > 0. Find the induced electric field everywhere due to the changing magnetic field.
Magnetodynamics Problem 1 (Induced Electric Field by Circular Magnetic Field) Consider a uniform magnetic field which points into the page and is confined to a circular region with radius R. Suppose the magnitude of B increases with time, i.e. dB/dt > 0. Find the induced electric field everywhere due to the changing magnetic field.
The far-zone electric field of an antenna can be approximated
by
P.11-add3 The far-zone electric field of an antenna can be approximated by le jkr Je cos? 0, 0sos E. = { r otherwise E = 0. Find The half power beamwidth in the xz- and yz- planes. The directivity Do. The approximate directivity Do using equation Do = 0.787 the (3.108) on p. 7, Lec_22. (Bu12), (Bv2) -nimi 47 / XZ yZ
In the following figure, the magnetic field is decreasing. Which figure represents the induced electric field? Select one: a. b. c. * C
An electron travels through a region with non-zero electric and magnetic fields. The electric field is directed into the page (-k cap), the electron is moving to the right (+ i cap), and the net force on the electron is zero. a) Which component of the magnetic field must be zero? b) Which component of the magnetic field must be non-zero?
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