A fundamental and empirical law quantifying the electrostatic force between two charges.
Questions tagged [coulombs-law]
914 questions
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How much time would it take for a positively charged particle to get to an infinite, negatively charged wall?
There is a negatively charged wall($q$), which has equal charge density. There is a positively charged particle($Q$) with a mass of $m$, the distance between them is $d$.
How much time would it take for the particle to get to this wall?
EDIT: I…
FloriOn
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Limitation of Coulomb's law
The Coulomb's law is an expertimental law which calcuates the electrostatic force between distinct two electrically charged point particles (point charge) at rest.
And Point particle doesn't take up space.
However, there is following sentence in …
KHJ
- 107
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Coulomb's Law and relative motion
This might be a repeated question but I couldn't find an answer already.
I am told by my teacher that Coulomb's Law is valid for stationary charges. Here are the two validity criteria I am given;
(i) either both the charges are at rest or
(ii) one…
Rew
- 549
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Coulombs Law when two unlike particles approach each other
When two unlike charged particles are placed at a distance they get attracted but the force depends on the inverse of the square of distance between the particles. So when they approach each other (as d becomes 0) wont their velocities become very…
Mitul Agrawal
- 112
- 10
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Is Coulomb's law correct?
Why don't electrons and protons collide?
Hydrogen atoms are often ionized. After ionization, it is divided into electrons and protons, which can merge into hydrogen atoms at any time.
Why don't electrons crash on protons?
According to Coulomb's…
Cang Ye
- 345
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What is the intuitive meaning behind Coulomb's constant $k_e$?
What is the intuitive meaning behind Coulomb's constant $k_e$?
If the force of an electric field can be calculated by
$$F=k_eqQ/d^2$$
If I could guess I would say $k_e$ is the acceleration but I am not sure.
Ray Kay
- 1,660
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Coulomb's law in vector forms?
The formula of Coulomb's law:
If we have two charge q1, q2. We have a formula
1) The magnitude of Coulomb's law:
$$F= \frac{k|q_{1}||q_{2}|}{r^{2}}$$
2) The vector form:
$$\vec{F_{12}}= \frac{k(q_{1}q_{2})}{r^{2}}\hat{r_{12}}$$
$F_{12}$ is the…
PandoraU.U.D
- 287