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Coulomb's law is applied to point charges because there are "problems" applying it to a charge that has "dimension" to it. A charge is surrounded by an electric field. If we cannot treat it as a point, then the charge has to be "distributed" through the "body" of the charge. It will change the way we have to do the math. If we view charges as non-point sources, then we can't apply the mathematics to the charges in quite the same way as we do when we work things out with point sources. Take a charge that isn't a point source and one that is. If the charge that isn't a point source has "dimension" to it, then the charge on that charge (if that makes sense) is not eminating from a point but from the "body" of the charge as a whole. The electric field will be "distributed" over the volume of the body of the charge, and its effect on a point source will have to be worked out differently than it would if it was point source-to-point source.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoBecause otherwise, parts of the charge will exert their force at different distances,
or in different directions. Let's just say that calculations are simpler for a point charge.
If the charge is distributed, you have to imagine the charge spread out over many
small "point charges" (that is, each piece is small enough so that, for practical
purposes, it can be considered a point charge), and the individual contributions
must be added. This is called "integration".
None of this means that Coulomb's law is not 'valid' for a distributed charge.
It certainly is, just as surely as Newton's law of universal gravitation is valid for a
distributed mass. Smeared out charge behaves exactly as if all the charge were
concentrated at the "center of charge", in the same way that smeared out mass
behaves exactly as if all the mass were concentrated at the "center of mass".
If the concentrated version and the distributed version are in identical sealed
cartons, you can't tell the difference from the outside.
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Why can't coulomb's law be applied to charged object that are very close to each other?
Actually Coulombs law is applicable only for point charges but not for bodies. But while calculating the electrostatic force between two spherical charged bodies they supposed as point masses(objects) but the distance seperation should be more greater than their radii. Otherwise the charge on one body can influence charge on another body.
What is the drawback of coulombs law?
Coulumbs law is applicable only for static fields that is when charges are stationary
Is hooke's law valid for all materials?
No, only for elastic materials and only for forces which are within the material's elasticity.
Is electric force only dependent on charge?
Yes
Is it true for an electric current to flow only if two objects have a different charge?
Only if there is a potential difference between two points, does the charge move specifically in a direction.
How is coulombs law different from newton law?
Newtons law has to due with mass and ATTRACTION only Coulombs law has to due with charge and ATTRACTION AND REPULSION
A 1000 uF capacitor hold 9.2 coulombs of charge what is the voltage on the capacitor?
9200 volts my 1000 uF capacitor only holds 10 volts
Do protons and electrons cancel each other out?
well, neutrons are neutral which means it does not have a charge so if u only have electrons and neutrons, it would be negative, however if you had equal protons and electrons, it would be neutral.
Why can't coulomb's law be applied to charged object that are very close to each other?
Actually Coulombs law is applicable only for point charges but not for bodies. But while calculating the electrostatic force between two spherical charged bodies they supposed as point masses(objects) but the distance seperation should be more greater than their radii. Otherwise the charge on one body can influence charge on another body.
Why can't coulomb's law be applied to charged objects that are very close to each other?
Actually Coulombs law is applicable only for point charges but not for bodies. But while calculating the electrostatic force between two spherical charged bodies they supposed as point masses(objects) but the distance seperation should be more greater than their radii. Otherwise the charge on one body can influence charge on another body.
How would you calculate the amperage for a strobe circuit with only the known values of farads volts joules and coulombs?
Amps are coulombs per second, and there is no information on rates given here.
What is the drawback of coulombs law?
Coulumbs law is applicable only for static fields that is when charges are stationary
The charge of electrons?
Electrons have a negative charge. The easy way to remember it is because the names of the other two particle types which make up an atom sound like what they are: Proton is Positive Neutron is Neutral So you're only left with the negative charge, which must be assigned to the electron.
What are charge offs?
Charge offs are accounts that have been written off by the creditor as uncollectable. The debt owed is still valid and can be collected on either by the original creditor or by a collection agency. You can only erase charge offs by disputing them to the credit bureaus or negotiating the removal by the original creditor.
Hypothesis only becomes a valid argument conclusion after it has been?
tested and supported by evidence gathered through research or experimentation. This process helps to verify the hypothesis' accuracy and reliability in making predictions about the phenomenon being studied. Without testing and evidence, a hypothesis remains a proposed explanation without the weight of scientific validation.
Do electric field lines radiate outward like spokes on a wheel?
Only from a point charge, or from one with spherical symmetry.
Is AUFBAU principle valid for H like atoms only?
it is not valid for hydrogen
