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The anode is the electrode where oxidation occurs and electrons are lost. The cathode is where reduction takes place and electrons are gained. These reactions don't occur separately; they must work together in a reduction-oxidation reaction.For this next section, let's assume the electrodes are zinc and copper.o determine the voltage of any cell, subtract the electrode potential of the anode from that of the cathode and you get the electrode potential of the cell, or voltage. Eo cell = Eo cathode-Eo anode. Corrosion is when metal is gradually destroyed through chemical reactions, and it is a real problem in our daily lives.
A high negative voltage is applied to the anode connection near the screen. A positive voltage is applied to the Cathode. A negative voltage on the first anode causes electron released from the heated cathode to accelerate up the tube towards the screen. The screen anode causes further acceleration causing electrons to hit the inside of the phosphor coated screen. The electrons hitting the screen causes the phosphor coating to glow.