Hey, I have a question on the relationship between current and voltage. Can some
ID: 2179967 • Letter: H
Question
Hey, I have a question on the relationship between current and voltage. Can someone tell me if I'm correct on this? I have two concepts that I want clarified. If not, please help! Thanks!Concept 1) From the equation V=IR, as the current increases, voltage increases (assuming resistance remains constant).
I completely understand this relationship; however, I believe this concept can be tested in twofold and wanted to clarify it.
Concept 2) So, by convention the direction of the current is the same as the flow of positive charge. Assuming there is a current with a constant rate, there is current flowing from region 1 located on the left (contains excess positive) to region 2 located on the right (contains excess negative). So the current is directed toward the right. From the equation ?V=Q/C, I calculated the change in voltages relative to each other.
?V1=V1f-V1i=(Q1f-Q1i)/C, where Q1f becomes less positive relative to Q1i (more positive) from losing charge to region 2.
?V1=(less positive
Explanation / Answer
current always flows from higher voltage to lower voltage