Basic Properties of Electric Charge
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Is there a law of quantisation for mass, just like the quantisation of charge?
Is there a law of quantisation for mass, just like the quantisation of charge?
The quantisation of electric charge, q = ne, applies to electric charge only, even though charge cannot exist without mass.
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How can we say that the additivity of electric charges is much different from the simple addition of mass?
How can we say that the additivity of electric charges is much different from the simple addition of mass?
One simple rule to think here is that electric charge is a scalar quantity with magnitude. It has positive and negative signs, depending on the direction it is forced to move in an electric field. Mass is always positive. So when you add mass, it never cancels out or becomes zero. Also do consider t
Upvote If the net charge in an isolated system is shown as zero, is there no electric charge within it?
If the net charge in an isolated system is shown as zero, is there no electric charge within it?
No, there may be some charges inside the system. The overall charge is zero because the total positive charge will cancel out the total negative charge inside. This directly follows the principle of additivity of charge, where the positive and negative charges are the algebraic sum of each other.&nb
Upvote Is there any law of quantisation for mass, just like for charge?
Is there any law of quantisation for mass, just like for charge?
Even though charge cannot exist without mass, we can only have the quantisation of electric charge using the equation, q = ne. We look at the number of point charge and the electron's charge.
Upvote How can we say that the additivity of electric charges is much different than the simple mass addition?
How can we say that the additivity of electric charges is much different than the simple mass addition?
One rule to think here is that electric charge is a scalar quantity. It has magnitude. It has both positive and negative signs, based on the direction it is forced to move in an electric field. Mass is always positive, on the other hand. So when you add mass, it never becomes zero.
Upvote If the net charge in an isolated system is zero, does it always mean there is no electric charge in it?
If the net charge in an isolated system is zero, does it always mean there is no electric charge in it?
No, the system can still have charges inside. The overall charge is zero only because the total positive charge will cancel out the total negative charge inside. This directly follows additivity of charge rule. The positive and negative charges are the algebraic sum of each other.
Upvote When two or more individual charges are present in a system, the total charge will be an algebraic sum of all individual charges and not the vector sum. Therefore, an electric charge is considered as a scalar quantity.
Upvote Why do conductors have a positive charge, a lack of free electrons, not as excess number of protons?
Why do conductors have a positive charge, a lack of free electrons, not as excess number of protons?
This is an interesting question! Even though a proton has a positive charge, the net positive charge in a conducting material is always due to the removal of free electrons.
This happens due to the availability of only free electrons in all conductors. Since protons are present in the nucleus,
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