What are ohms amps and volts?

Answer 1

Amps are a measure of current flow in an electrical circuit and represent the physical number of electrons passing a point in a circuit per second. 1 Amp of current flowing in a circuit means that every second 6.242 x 10e18 electrons goes past a point on the circuit.

Volts are a measure of how much energy each electron has with reference to another point. A voltage is a difference in energy and has no meaning without a reference point. 1 Volt means that for every 6.022 x 10e23 electrons, there is one joule of electrical energy.

Ohms are units of resistance, how much opposition the conductor provides to the current. Resistance is related to the phyiscal size of the conductor.

These three units relate to each other in Ohm's Law: Voltage = Current x Resistance because if there is more opposition to the current, there needs to be more energy to make it flow.

A common illustraiton of an electrical circuit is a water pipe: Amps is how fast the water is flowing, Voltage between two points is the pressure difference and Ohms describe how big the pipe is and if there is any obstruction inside it.

Answer 2

Volts is the potential energy of the electricity and current is the amount of flow. If we compare electricity to water. Volts would be the water pressure and current is the hose size. Squirt gun has high pressure but low flow. A fire hose has high pressure and high flow. The sink drain has low pressure but high flow. All have specific use. Static charge, high voltage low current. Car starter low voltage high current. Electric car motor high voltage and high current