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The cathode is negatively charged. A good way to remember this is thinking of what it's doing. A cathode attracts cations which are positively charged. In order to attract a positive charge, the charge on the electrode must be oppositely charged. So it has to carry a negative charge. The opposite is true for the anode. Since it attracts anions which are negatively charged, the electrode must carry a positive charge.
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Are cathode rays deflected toward a negatively charged plate in an electric field?
Yes. Cathode rays, otherwise known as electrons, are repelled by a negative charge, and attracted to a positive charge.
What observation did Thomson make to suggest that an electron has a negative electric charge?
The deflection of cathodic rays was the source of inspiration for Thomson.
By measuring the deflection of cathode rays in electrical and magnetic fields J.J. Thomson was able to determine what?
Charge on the electron.
Why do the aluminum ions collect at negative electrodes?
Aluminium is formed at the cathode because the Al ions (Al3+) within the electrolyte are attracted to form aluminium metal by gaining 3 electrons. The metal is molten due to the high temperature of the cells. Hope this helps
What is a common cathode?
a cathode that is common
What is the charge of the particle in cathode rays?
Cathode rays are attracted to the positive charge on the anode! They are repelled by the negative charge on the cathode.
Why do cathode rays move from the negative end of the tube to the positive end?
Because an electron carries a negative charge and in electricity, opposites attract. Particles with a negative charge will be drawn to the positive charge in the cathode tube.
What electrode has a negative charge?
The cathode.
What is an electrode that has an netgative charge?
cathode
Is the amount of space charge created at the cathode is primarily controlled by the tube current?
The cathode space charge is determined by the voltage on the filament.
Why does the DNA fragment size change as you move from the cathode to the anode?
The DNA fragment size decreases as it moves from the cathode to the anode. This is due to the negative charge of the DNA moving against the positive charge of the cathode.
What is an electrobe that has a positive charge?
Assuming this is a misspelling of "electrode" ... Electrochemistry can be confusing, because the answer depends on the type of device! In a galvanic cell (or discharging battery), the positively charged electrode is the cathode. However, in an electrolytic cell (or recharging battery), the positively charged electrode is the anode. The easiest way to keep this straight is to remember that the cathode is the one the cations (positively charged ions) migrate towards, and the anode is the one the anions (negatively charged ions) migrate towards.
What is the charge of the cathode tube particles?
Cathode rays are high speed electrons. So they are negatively charged.
Who discovered anode and cathode rays?
Cathode rays were discovered by JJ Thomson and carry a negative charge Anode rays were discovered by Goldstein and carry a positive charge.
Cathode rays all have same negative charge?
True
Are cathode rays deflected toward a negatively charged plate in an electric field?
Yes. Cathode rays, otherwise known as electrons, are repelled by a negative charge, and attracted to a positive charge.
What observations did Thomson make to suggest that an electron has negative electric charge?
Thomson observed that a cathode ray bent when in the presence of a magnetic field. After the cathode ray bent the opposite way when the opposite pole of the magnet was placed next to it, Thomson concluded that the cathode ray had a negative charge.
