Description of the steps/processes involved based on electromagnetism in television (any concepts of magnetism)
Francisco Proctor
Answered question
2022-07-22
Answer & Explanation
bulgarum87
Beginner2022-07-23Added 15 answers
Cathode-ray-type television screens, like the one in the video, create an image on the screen by accelerating charged particles (electrons) using an electric field. The electrons then pass between two steering coils made of copper wire. Currents running through the coils produce magnetic fields.
The TV signal is carried by wire to an antenna, which is often on a high mountain or building. The signal is broadcast through the air as an electromagnetic wave. These waves can travel through the air at the speed of light but not over very long distances.
New Questions in Electromagnetism
The magnetic field inside a long straight solenoid carrying current
A)is zero
B)increases along its radius
C)increases as we move towards its ends
D)is the same at all pointsWhich of the following units is used to express frequency?
Hertz
Watt
Newton
PascalWhat does tangential force produce?
How Many Different Orbitals Are There?
What is value for electrons ?
Which of the following correctly describes the magnetic field near a long straight wire?
A. The field consists of straight lines perpendicular to the wire
B. The field consists of straight lines parallel to the wire
C. The field consists of radial lines originating from the wire
D. The field consists of concentric circles centered on the wireIs energy directly proportional to frequency?
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Magnetic field lines never intersect each other because
There will be two directions of the field at the same point.
Feild lines repel each other
Field lines follow discrete paths only
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Towards 20 A
Towards 40 A
Zero
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C) 650, Blue
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Which of the following radiation has the shortest wavelength.
X-ray
Infra red
microwave
ultravioletHow to find the local extrema for ?
