Spark Plug Working | The Engineer's Mess
Spark plug used in petrol engine to create a spark that burns the air-fuel mixture. When you start a vehicle, Electric current travels from the battery to the ignition coil, which raises the Voltage in excess of 20,000 voltes from a lower voltage battery that High Voltage electric current goes into Spark plug from the ignition coil, which it generates a spark in the small gap between center electrode and ground electrode to burn air-fuel mixture.