# Do protons move?

## Homework Statement

Hi , in the first chapters of my physics book states that positive charges don't move , but now this new chapter about curruent and resistance says that the direction of the current is the direction in which the positive charges flow or move . I'm confused
Can someone explain please? , I don't need a scientific explanation because that would confuse more , just a simple answer because I'll have an exam soon .Thanks

protons do move and current is the flow of negatively charged particles electrons... :) not the positive charge.

HallsofIvy
Homework Helper
When I first read the title to this thread I wanted to respond "Of course, protons move! I just moved a lot of them when I picked up this laptop computer."

But I see you are asking a serious question. You are asking specifically about "charge" moving in an electric line, right? "Charge" is not the same as "protons" or "electrons". If the electrons move in one direction, then a negative "charge" is moving in that direction while a positive "charge" is moving in the opposite direction, even though no actual "protons" may move. It was, I believe, Benjamin Franklin who decided to declare that current move in a particular direction and, from the point of view of some physical matter actually moving, he got it wrong! Of course, he did not know anything about "protons" or "electrons". He was working with static electricity generators and, seeing a spark jump between his finger and the generator, assumed something was coming from the generator to his finger, not realizing that the "electrons" were actually going the other way. On a larger scale, he assumed that lightning was something going from the clouds to the earth. In fact, it is more often electrons going from the earth to the cloud.

1 person
Protons don't move. When they say a positive charge moves. Think of it as electrons moving the opposite way. Say if you have a piece of metal and one side has a positive charge, what this means is there is a deficiency of electrons and so the positive charge will repel and electrons will flow to disperse the positive charge.

nikunj kumar shaunak and manuel325
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