A switch is a device that opens and closes an electrical circuit.
Relays are electromagnetic switches used to control large currents or switch between multiple circuits.
A switch is a device that opens and closes an electrical circuit.
It can be compared to a valve in a water circuit. When the switch is open, no current flows through the circuit.
When the switch is closed, it becomes a part of the wire, allowing current to pass through with no loss of voltage.
Relays, on the other hand, are electromagnetic switches that are controlled by an electric current.
They are used to control large currents or switch between multiple circuits.