Voltage Current and Resistance Explained animation Video

voltage current and resistance in circuits explained definition animation video for kids

Voltage Current and Resistance

The relationship between voltage, current, and resistance can be substituted with the water flow as illustrated.

Voltage and current
The device in the illustration shows how the speed of the waterwheel changes by changing the water volume in the left tank. This means that the speed of the water flowing to the waterwheel changes with the change in the water pressure in the tank.
When this phenomenon of water is substituted with electricity, the water volume (water pressure) is the voltage, and the water flow is the electrical current.

Current and resistance
The force of the water flow changes with the height of the gate that is located between the tank and the waterwheel. As a result, the speed of the waterwheel changes.
This gate is equivalent to the resistance in an electrical circuit.

Current, voltage, and resistance
Increasing the water volume in the tank increases the speed of the waterwheel. On the other hand, lowering the gate to oppose the water flow decreases the speed of the waterwheel. Thus, it is possible to operate the waterwheel at a desired speed by adjusting the water pressure and the height of the gate.
Similarly, in an electrical circuit, the desired amount of work is allocated to various devices by changing the value of the resistance or voltage.