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Why is magnetic field used to deflect electron beam and not an electric field in a television picture tube?
Wiki User
∙ 6y ago
if electric field is used then we have to apply a very high voltage ,or we may require a very long tube.however ,if a magnetic field is used ,even a small field can produce large deflection ,on the other hand ,the required size of the picture tube will be highly reduced .due to this reason,the magnetic field is uesd to deflect the electron beam in T.V. insted of the electric field.
Wiki User
∙ 6y ago
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What microscope uses a magnetic field?
A magnetic resonance microscope uses a magnetic field to create detailed images of tissues and materials. This type of microscope is useful for studying biological samples with high sensitivity and resolution.
An electric current cannot be used to deflect a compass needle?
An electric current can be used to deflect a compass needle. When an electric current flows through a conductor, it generates a magnetic field around it, which can interact with the magnetic field of the compass needle, causing it to deflect. This principle is the basis for electromagnetism.
Can a electric current be used to deflect a compass needle?
Yes, an electric current can generate a magnetic field that can deflect a compass needle. This phenomenon is known as electromagnetism and is the basis for how devices such as electromagnets and speakers work.
Can an electric current be used to deflect a compass needle?
Yes, an electric current can create a magnetic field that can deflect a compass needle. This phenomenon is known as the Oersted Effect and demonstrates the relationship between electricity and magnetism.
Why does a current carrying wire deflect a magnetic compass?
A current-carrying wire generates a magnetic field around it due to the flow of electric charges. When the wire is placed near a magnetic compass, the magnetic field produced by the wire interacts with the magnetic field of the compass needle, causing the needle to deflect and align with the direction of the wire's magnetic field.
How is the electron beam in a TV picture tube deflected?
four coils are used to create a magnetic field to deflect the electron beam in two dimensions.
Can electromagnetic wave deflect by electric or magnetic field?
Yes, electromagnetic waves can be deflected by electric or magnetic fields. The direction and magnitude of the deflection depend on the orientation and strength of the field relative to the direction of the wave propagation. This phenomenon is the basis for technologies such as antennas and magnetic resonance imaging (MRI).
What is used to bend electrons in an electron microscope?
Magnetic lenses are used to control the electron beam in an electron microscope. The magnetic field produced by the magnetic lenses deflects the energetic electrons. They are typically called magnetic lenses because they deflect the electron beam like optical lenses deflect light.
What microscope uses a magnetic field?
A magnetic resonance microscope uses a magnetic field to create detailed images of tissues and materials. This type of microscope is useful for studying biological samples with high sensitivity and resolution.
What type of field would deflect alpha and beta particles?
A magnetic field would deflect both alpha and beta particles, as would a charged electric field.
What type of a magnet do televisions use?
CRT style televisions use an electromagnet, called the "Yoke", on the neck of the CRT in order to deflect the electron beam.
How do you show that electric current causes magnetism?
Put a wire carrying an electric current near a compass and it causes the needle to deflect.
What did john Thomson use to deflect the cathode rays?
he dint did nething to deflect them thet went straight to the anode +ve of the tube becoz opposite attracts.
What is a CRT monitore?
Its Short for Cathode Ray Tube and is a vacuum tube inside the computer monitor containing electrons a with internal or external means to accelerate and deflect the electron beam. Its designed like a television box.
What deflects the ions?
Instruments like ion optics or electrode systems are commonly used to deflect ions in mass spectrometry. These systems apply electric or magnetic fields to manipulate the ions' trajectories, allowing for separation, focusing, or redirection of the ions. The specific design and configuration of these components determine how effectively ions can be deflected based on their mass-to-charge ratios.
Can a electric current be used to deflect a compass needle?
Yes, an electric current can generate a magnetic field that can deflect a compass needle. This phenomenon is known as electromagnetism and is the basis for how devices such as electromagnets and speakers work.
Can an electric current be used to deflect a compass needle?
Yes, an electric current can create a magnetic field that can deflect a compass needle. This phenomenon is known as the Oersted Effect and demonstrates the relationship between electricity and magnetism.
