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benzun_1999
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dear reader,
What is charge excatly?
-benzun
All for God
What is charge excatly?
-benzun
All for God
Last edited by a moderator:
I wish I had a good answer for you. Things like this are difficult to define in a simple statement without being cirular. As chroot stated it has to do with the electric force. But the electric force is defined in terms of electric charge.Originally posted by benzun_1999
dear reader,
What is charge excatly?
-benzun
All for God
When you're far enough away from the atom, you don't notice its individual positive and negative pieces. Think abou this way -- when you're reading this page here on physicsforums.com, you can see the individual letters. If you step back 20 feet, you probably will not be able to discern individual letters anymore. The same thing happens with charges -- when you're far enough away from an atom with equal positive and negative charge, you don't detect any charge at all.Originally posted by benzun_1999
Nucleus is said to be Positive and electrons are negative. i have heard many people tell that when there is equal number of +ive and
-ive that charge is neutral. but it doesn't make sense to me as still more electrons can attracted by the nucleus with its charge.[?]
But what about that coulomb force then? F=Kq1q2/r^2chroot said:When you're far enough away from the atom, you don't notice its individual positive and negative pieces. Think abou this way -- when you're reading this page here on physicsforums.com, you can see the individual letters. If you step back 20 feet, you probably will not be able to discern individual letters anymore. The same thing happens with charges -- when you're far enough away from an atom with equal positive and negative charge, you don't detect any charge at all.
- Warren
xAxis said:But what about that coulomb force then? F=Kq1q2/r^2
It's a function of r^2. You detect the charge by detecting the force, which is coulomb's force, which is function of distance.
Or am I completely wrong here?
xAxis said:Ok. So I can see, coulomb force acts in accordance with Coulomb Law only on macroscopic scale?
But it still doesn't mean that it doesn't belong to 4 basic forces?
And if it is, I suppose , EM force, then it behaves differently in different "worlds", but is the same force?
Yes, the laws are similar, but the proportionality constants are different by many orders of magnitude, and that is what determines the distances on which they have a noticeable effect.xAxis said:Is it then truth that EM force counts as much stronger than gravity only due to the fact that it is posible to reach small distances between the sources? But it is essentialy inverse square law, like gravitation?
russ_watters said:Yes, the laws are similar, but the proportionality constants are different by many orders of magnitude, and that is what determines the distances on which they have a noticeable effect.
Charge refers to the fundamental physical property of matter that causes it to experience a force in an electric field. It is the property responsible for interactions between subatomic particles and is measured in units of Coulombs (C).
The two types of charge are positive and negative. Positive charge is carried by protons, while negative charge is carried by electrons. Similar charges repel each other, while opposite charges attract.
Charge is not created or destroyed, but rather transferred from one object to another. This can occur through processes such as friction, conduction, and induction.
Conductors are materials that allow electric charge to flow through them easily, while insulators do not. This is because conductors have free electrons that can move in response to an electric field, while insulators have tightly bound electrons that cannot move as easily.
Electricity is the flow of electric charge through a conductive material. When a circuit is completed, electrons can move from a negatively charged area to a positively charged area, creating a flow of electricity.