Which end of an electron beam is at the higher potential?

AI Thread Summary
An electron beam moving from an electrode on the right to one on the left indicates that the current flows from left to right. Since current flows from positive to negative, the positive terminal, which is at a higher potential, must be on the left. Therefore, the right end of the electron beam is at a higher potential. The reasoning aligns with conventional understanding of electric potential in circuits. The conclusion confirms that the left end of the electron beam is indeed at a higher potential.
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Homework Statement


An electron beam travels from an electrode on the right to one on the left. Which end of the electron beam is at a higher potential?

Homework Equations





The Attempt at a Solution


My reasoning was that if the electron beam is moving from right to left, then the current's direction is from left to right. Current usually moves from the positive to the negative (like in a battery). The positive terminal of a battery is at the higher potential.

Therefore, the the right end of the electron beam is at the higher potential.

But I really don't know, that was more of a guess than anything. Was my reasoning completely flawed?
 
Last edited:
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Correct.
 

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