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Question
If a Coolidge tube operators at 20kV, what is the maximum kinetic energy you'll find among the electrons near the target?
If a Coolidge tube operators at 20kV, what is the maximum kinetic energy you'll find among the electrons near the target?
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Solution
The correct option is D 20,000eV
You should get a hang of the eV unit by now. 1eV of energy equals the work done on an electron in accelerating it through a potential of 1V. In other words, when an electron accelerates through a potential difference of 1V, it gains an energy equal to 1eV, that's how eV is defined.
How much will an electron's energy be if it accelerates through 20kV or 20,000V of potential difference, and does not lose the gained energy in collisions with other elctrons, etc.?
It would havegained 20,000 eV of energy! Right?
You should get a hang of the eV unit by now. 1eV of energy equals the work done on an electron in accelerating it through a potential of 1V. In other words, when an electron accelerates through a potential difference of 1V, it gains an energy equal to 1eV, that's how eV is defined.
How much will an electron's energy be if it accelerates through 20kV or 20,000V of potential difference, and does not lose the gained energy in collisions with other elctrons, etc.?
It would havegained 20,000 eV of energy! Right?
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