Where do come energy in electron?

Let’s say that electrons are flowing in conductors during an electric current. These electrons are only part of the conductor. Each atom in the conducting materials provides one or more electrons that can move freely. It’s the fact that each atom provides at least one electron free that turns a conductor into an conductor.

Answer: When these electrons are free to flow in current, their energy comes from the voltage difference across a conductor. Because electrons have a negative electric charge, they attract the positive voltage side and repel the negative side. A voltage difference causes each electron to experience a force, which causes them to accelerate and gain kinetic energy.

Contrary to popular belief, every electron does not acquire this energy for very long. This is because electrons constantly collide with atoms in conductor. When they collide, it happens in a very short time. The electrons give up their kinetic energy to each atom they collide with. This causes the atom to heat slightly. The voltage then causes the electron to accelerate once more, until it collides with another atom. This cycle continues heating the conductor. The electrical current to each electron is very slow and stop-and-start. It’s only when there are many electrons moving in a conductor does the stop/start motion average to a steady current.

Contrary to popular belief, electrons in an electric current do not carry any energy around a circuit. The power supply provides the energy by maintaining the voltage in the circuit. The electrons in the current then take the energy from the circuit’s voltage and convert it into heat. Distribution of electricity is not just about carrying voltage. It’s also about carrying current. In fact, it is the voltage that transports the energy to the lightbulb so quickly and not the slow-moving current. The current that flows in the wires can be considered a minor inconvenience. It just wastes some energy from the voltage being disseminated.


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