What is current voltage and resistance?

The three basic principles for this tutorial can be explained using electrons, or more specifically, the charge they create: Voltage is the difference in charge between two points. Current is the rate at which charge is flowing. Resistance is a material's tendency to resist the flow of charge (current). read more

When describing voltage, current, and resistance, a common analogy is a water tank. In this analogy, charge is represented by the water amount, voltage is represented by the water pressure, and current is represented by the water flow. read more

Just like the water flow was determined by the amount of pressure and resistance in the hose, electric current is determined by the amount of voltage and resistance in an electric circuit. Ohm's Law. The relationship between voltage, current, and resistance is described by Ohm's law. read more

The amount of current in a circuit depends on the amount of voltage available to motivate the electrons, and also the amount of resistance in the circuit to oppose electron flow. Just like voltage, resistance is a quantity relative between two points. read more