The electric potential connection with electric field, their formulas, working principle and equations. Definition of Voltage and Electric Potential?
Defining electric field was necessary to explain the next interconnection with electrical potential. As for the potential of the electric field. Its value at a given point field strength E is determined by the work, they do force moving the unit positive charge from a given point of the infinitely distant point (outside the box).
If field generated by the positive charge of q points in the environment, the absolute permittivity ε, the distance r from the charged body has the potential of:
The equation is the result of a mathematical operation called integration is (definite integral from r to ∞). Believe me, that explanation of the basics of electrical engineering is very necessary and without the use of differential and integral calculus it is very difficult and not very precise knowledge.
On the other hand, I do not want to create artificial barriers to readers who have no idea what it is integral, and derivative functions. Therefore, to reconcile the fire with water, I will use elements of higher mathematics where it is justified.
This will facilitate the reading of the readers for whom these concepts are understood, while the rest will remain only accepting the given result "on faith", but will not reduce the possibility of understanding the whole. I see no other reasonable choice. But, at the beginning I marked that there will be little! stairs has just begun!
By moving a positive charge q from one point of field strength E to another (the way s) field performs work L, equal to the potential difference of these points:
The stationary electric field work needed to move the load does not depend on the path on which charged partical is moving, but only the initial capacity of j 1 and j the final two . Such a field is called potential. The potential difference between two points is called the electric field voltage . They are determined by the formula:
If the voltage difference between any of the electric field is equal to zero (these are called. Equipotential points), you can combine them together a guide without any consequences.
I remind you that the unit voltage is volt (V).
