Linked Questions

2
votes
4answers
13k views

What is the difference between conventional current and electronic current?

what is the difference between conventional current and electronic current? How are they linked to one another?
2
votes
4answers
682 views

Effect of a magnetic field on cathode rays in a cathode ray tube

My question is regarding the direction in which cathode rays bend in a magnetic field. My book states that : When only electric field is applied, the electrons deviate from their path and hit ...
1
vote
5answers
3k views

Why is charge of the electron negative?

How did scientists figure out that the charge of the electron was indeed negative? I know how the cathode ray tube experiment works, but how did Thompson know that the plate that the cathode ray beam ...
1
vote
4answers
112 views

Confusion about electron flow and current

So, I learned in class that current is defined as positive charges moving from south to north. However, in all reality, the negative charges are moving, but the convention of positive to negative wors ...
0
votes
0answers
8 views

Direction of the current and the electrons [duplicate]

If the electric current is defined as Coulomb/second, why is the direction of the current is just the opposite of the direction of the flow of electrons?
3
votes
4answers
4k views

Potential energy sign conventions

Almost every book on physics that I read have some weird and non-clear explanations regarding the potential energy. Ok, I do understand that if we integrate a force over some path, we'll get a ...
3
votes
1answer
76 views

What would have happened if electron was considered positive?

We always keep on telling that current flows opposite to electron, since electron is negatively charged. And old people didn't knew, that it is electron which actually flows.. So, now if we correct ...
0
votes
2answers
178 views

How can Current be positive when electrons have a negative charge?

I am a little confused. I have been told that electrons carry a charge of $-1.6 \cdot 10^{-19}$ coulombs, and that 1 coulomb is $6.25 \cdot 10^{18}$ electrons, and $1 \,\mathrm{A}$ is the current from ...
2
votes
2answers
542 views

Conventional current and electric current

When an external field is applied ,then electrons move in the direction opposite to that field, I want to know that does conventional current moves in the direction of field? A confusion is there in ...
2
votes
3answers
27k views

Direction of current and direction of flow of electrons

My textbook says that the flow of current is from the positive to negative and my notebook say that the flow of electrons is from negative to positive. Why aren't they agreeing on one direction? Who ...
0
votes
3answers
1k views

Why is conventional current still used in schematic diagrams?

I am a beginner in electronics and i am learning on my own. I am currently reading this book "Electronics for dummies" and after reading some pages of this book i have a LOT of questions. I know about ...
0
votes
1answer
536 views

Why are electrons negative? [duplicate]

By my understanding their charge could have been called positive, and the charge of the proton and positron called negative. What are the historical reasons for this?
0
votes
3answers
188 views

Are electric sources and sinks symmetrical?

When discussing sources and sinks for the property of divergence of electric fields, why is the positive polarity uniquely selected as a source and the other a sink? Aren't they both sources and sinks ...
1
vote
2answers
82 views

Does the Conventional Current flow consist out of anything? (virtual photons)

I've red that virtual photons are a way of interpreting the electromagnetic force between charged particles. Is convention current a electromagnetic field or force? Or is it a movement of ...
17
votes
3answers
5k views

If electrons were positive and protons were negative, would life be different? [duplicate]

This was a question on a worksheet during my first week in a class on Electromagnetism. The answer is essentially: No. Life would be no different if electrons were positively charged and protons ...

15 30 50 per page