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Q: In the absence of magnetic fields cathode rays do what?
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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 did Thomson use in his experiments?

J.J. Thomson studied the deflection of cathode rays in electric and magnetic fields.


By measuring the deflection of cathode rays in electrical and magnetic fields J.J. Thomson was able to determine what?

Charge on the electron.


How magnetic field is related with cathode rays in physics?

When a magnetic field is applied to a cathode ray, the cathode ray is deflected.


What are the rays in the cathode ray tubepositive or negative or neutral?

The rays produced in a cathode tube in early experiments were actually just streams of electrons. They had a negative charge, which was discovered by JJ Thomson when he placed a magnet next to his cathode ray tube and say the ray bend.


Why Cathode rays travel in straight lines?

They don't. Well, they do in flat spacetime in the absence of an external force, but it's not a peculiar property of cathode rays; everything does that.


How do cathode rays form?

Cathode rays are the emission of free electrons form the negative pole of an electric circuit. To get this to happen you need to warm the cathode and place it in a vacuum tube with a high voltage across it. The electron then jump form the cathode and fly across the empty tube to the anode (positive end). They may be bent by magnetic fields in flight.


Which rays are not deflected by electric or magnetic fields?

These are gamma rays and X-rays.


What did Thomson conclude about the particles in cathode?

The immaterial nature and the aetherial hypothesis of cathode rays were proved wrong by J. J. Thomson. He concluded that the rays were comprised of particles. His entire works can be divided into three different experiments. In the first, the magnetic effect on cathode rays was studied while in the second, the rays were deflected by an electric field.


Why are electrons in a cathode ray tube deflected by magnetic and electric fields?

By nature electrons are charged particles (with a -1 charge). Also there's an established relationship between electricity, which involves the flow of electrons, and magnetism, known as electromagnetism. Ampere's right-hand rule suggests the magnetic field moves in a corkscrew direction perpendicularly in reference to the direction of the flow of electrons (electrical current).


How did thomas discover the electron?

J. J. Thomson discovered the electron using an experiment involving cathode rays and a magnetic field. When subjected to the magnetic field, the cathode ray was deflected. If the magnetic field was flipped, the cathode ray was deflected in the opposite direction. This proved that a cathode ray was a stream of negatively charged particles that would later be deemed electrons.


How did JJ Thompson demonstrate the existence of the electron?

J. J. Thomson discovered the electron using an experiment involving cathode rays and a magnetic field. When subjected to the magnetic field, the cathode ray was deflected. If the magnetic field was flipped, the cathode ray was deflected in the opposite direction. This proved that a cathode ray was a stream of negatively charged particles that would later be deemed electrons.