If you are searching for potential and capacitance notes, then this article is perfect for you. In this article, I will provide you with full relevant details about Each topic of electrostatic potential and capacitance. So stay connected with the post for complete information.
Potential and Capacitance
The potential difference between two points in an electric field may be defined as the amount of work done in moving a unit positive charge from one point to the other against the electrostatic forces.
For defining electric potential at any point, generally, a point far away from the source charges is taken as the reference point. Such a point assumed to be at infinity.
Also Read:- Electrostatics
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Electric potential due to a uniformly charged thin spherical shell
If we talk about a point lies inside the shell, then the electric field at any point inside the cell is zero. Hence electric potential due to the uniformly charged spherical cell is constant everywhere inside the cell, and its value is equal to that on the surface.
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The potential energy of a dipole is maximum when its dipole moment is antiparallel to the external field.
Free and Bound Charges
In metallic conductors, the electrons of the outer shells of the atoms are loosely bound to the nucleus.
A cavity inside a conductor is shielded from outside electrical disturbances. However the electrostatic shielding does not work the other way round. If we place charges inside the cavity the exterior of the conductor cannot be shielded from the electric fields of the inside charges.
If you want to learn about the concept of a capacitor and its principle and this article is perfect choice for you. And if you want to know how does the capacitance of a conductor increase, when in earthed connected conductor is placed near it. Then is to connect with this post we will briefly explain about it.
As we all know that, a capacitor is an arrangement of two conductors. It is separated by an insulating medium which is used to store electric charge.
Polarisation of dielectric
If the medium between the plates of a capacitor is filled with dielectric. Now if you talk about dielectric then it is a substance which does not allow the flow of charges through it. But permits them to exerts electrostatic forces on one another.
It is a fact that the dielectric constant is the ratio of the capacitance of the capacitor with the dielectric as a medium to its capacitance when all the conductors are in vacuum.
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