The electric potential at a point of an electric field is defined as the amount of work to be done to bring an electric charge unit from infinity to that point.
Similarly, the potential
difference between two points is defined as the work that must be done to bring a positive unit of charge from one point to another.
When a body is charged, it can attract a charged body in an
opposite way and repel a similarly charged body.
This means that the accused body has the ability to work. This ability to do the work of a charged body is defined as the electrical potential of that body.
When two electrically charged conductors are connected by a conductor,
the electrons begin to flow from a potential body lower than a higher potential body,
which means that the current starts to flow from a potential body larger
than a potentially lower body Potential difference of the body and the resistance of the connector. Driver.
The electrical potential of a body is thus its charged state,
which determines whether it supplies or discharges
electrical charge to another body.
The electric potential is classified as an electric level and the difference between two levels causes the passage of current between them.
This level must be measured from a zero level reference. The potential of the earth is set to zero
. The electrical potential above ground potential is considered to be a positive potential and the electrical potential below ground potential is negative.
The unit of electrical potential in volts. To bring a unit of charge from one point to another.
the potential difference between the points once made is 1 volt.
So we can say.
If a point has an electrical potential of 5 volts, we can say that a work of 5 Joules must be performed to bring a Coulomb charge of infinity to that point.
If one point has a potential of 5 volts and another point has a potential of 8 volts.
8 to 5 or 3 joules must be used to move a coulomb from the first point to the second.
The potential at one point
due to point load.
Take a positive charge + Q in space. Imagine a point at a distance x from the named charge + Q.
Now we place a positive charge unit at this point.
According to Coulomb’s law, the positive charge of the unit is subjected to a force
Now move this positive charge of the unit a short distance dx to the charge Q.
During this movement,
the work done in the field is
The total work that must be done to bring the positive unit charge of infinity to the distance x is given by
By definition, this is the point’s electric potential due to charge + Q.
So we can write.
The potential difference between two points
Consider two meters distant and d2 meters of charge + Q.
We can express the electric potential at the point d1 meters from + Q, like
We can express the electric potential at the point d2 meters from + Q, like
The potential between
difference these two points is so.