The concept of electricity itself is based on electron movement. When you force electrons to move in sync, they end up producing heat, which turns the wire they're moving in into a magnet. Britannica describes electricity as a phenomenon associated with stationary or moving electric charges.
The energy to get the electrons moving in an organised way comes from either a battery or a generator. When a battery organises electrons they all move in the same direction at the same time — the battery pumps electrons through the circuit wires from the negative terminal to the positive.
Electricity works when a circuit is made of a conductor, a load or an electricity-consuming device and ground. Electricity will flow through the conductor to the load and finally to the ground to complete the circuit. Electricity becomes dangerous when you become part of the circuit, because the closest path to the ground may be through.
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