What is the difference between negative charge and free electron?

Click For Summary
Electrons inherently carry a negative charge, making them synonymous with negative charge in discussions about electricity. A charged conductor, such as one with a charge of -1.0 μC, indicates an excess of electrons, specifically around 6.24 trillion electrons. This calculation is derived by dividing the total negative charge by the charge of a single electron. Understanding this relationship clarifies the distinction between negative charge and free electrons. The conversation emphasizes the fundamental nature of electrons in defining electrical charge.
Candies2002
Messages
2
Reaction score
1
Homework Statement
What is the difference between negative charge and free electron?
Relevant Equations
No. I wonder what is the difference between negative charge and free electron?
No.
 
Physics news on Phys.org
An electron carries negative charge. It is an electron.

A sheep has mass, but it is a sheep.

##\ ##
 
Reply
  • Like
  • Haha
Likes vela, rsk and Steve4Physics
When you see something like "the charge on a conductor is -1.0 μC" this says to you that the conductor is not neutral but has an excess of 6,241,509,074,460 electrons on it (give or take a few). You get that number by dividing the negative charge by the charge of one electron.
 
Thread 'Chain falling out of a horizontal tube onto a table'

Thread 'Chain falling out of a horizontal tube onto a table'

My attempt: Initial total M.E = PE of hanging part + PE of part of chain in the tube. I've considered the table as to be at zero of PE. PE of hanging part = ##\frac{1}{2} \frac{m}{l}gh^{2}##. PE of part in the tube = ##\frac{m}{l}(l - h)gh##. Final ME = ##\frac{1}{2}\frac{m}{l}gh^{2}## + ##\frac{1}{2}\frac{m}{l}hv^{2}##. Since Initial ME = Final ME. Therefore, ##\frac{1}{2}\frac{m}{l}hv^{2}## = ##\frac{m}{l}(l-h)gh##. Solving this gives: ## v = \sqrt{2g(l-h)}##. But the answer in the book...
View full post »

Similar threads

Mechanisms Involved When Charging a Battery
Replies
10
Views
1K
How does the electroscope lose electrons to the Earth?
Replies
5
Views
2K
Gauss' law and Faraday cage problem
Replies
10
Views
2K
Do electrons flow through a battery or is it something else?
Replies
44
Views
5K
Why Does Positive Charge Exert Elec. Field Beyond Neg. Charge?
Replies
16
Views
2K
Charge on two spheres related to Earthing
Replies
17
Views
2K
Solving Charge Across Plates of a Capacitor w/ Negative Ions
Replies
2
Views
2K
Calculating Charge of an Electron w/ the Millikan Oil Drop Experiment
Replies
12
Views
2K
Volume density vs Surface density of charge distribution
Replies
14
Views
2K
Understanding Fundamentals of Electronics: Solving an Electric Charge Problem
Replies
11
Views
2K