what is voltage(English ver)?

It is said that most of the reasons for not understanding electricity are invisible, but rather than this part, it can be judged as confusion caused by continuous learning about parts that do not understand the basic principles of electricity

 

Let's look at a lot of examples, water tanks.

Hydraulic pressure is a force that presses the area of the orange part of the floor, and a force that presses with a force of about 10 tons is applied. This is due to the potential energy.

 

In physics, 10 tons is 10*1000kg, 10000kg, and the gravitational acceleration is 9.8m/s
F = m*a -> 98000N = 10000 kg × 9.8 m/s, the floor area is 1 m^2, and 1 Pa is 1 N/m^2
The pressure can be expressed at 98000 Pa.

 

What will happen if this water bottle has a hole?

The answer is zero water pressure.
Because there is no more water.

I will understand this concept and move on to the formula of the electrical part.

 

Next is a 10V battery.
V: Voltage is when an electron moves 1 meter to 1 N.    1N * 1m = 1J
In the end, the ability to do 1J of the electron is called voltage. However, since the number of electrons is too large, if 6.02*10^18 electrons are 1C, the definition of 1V is 1V voltage when 1C electrons do 1J of work.

 

Definition 1V is the ability of an electron of 1C to move 1m to 1N

Or the ability of a 1C electron to do a 1J job

 

 

 

But what happens when the voltage of 10V is 0V?

 

All electrons move to a voltage of 0V.

Comparison Table of Water Pressure and Voltage

 

energy

Water Pressure

m*g*h(Joule)

m: mess(kg), g(gravity m/s^2), h(heigt m)

Voltage

C*J(coulomb *Joule)

C=6.02*10^18pieces , J(줄) = N(force)*m(mess kg)