An easy to follow guide on how to buy and store the cryptocurrency Dent (DENT) An easy to follow guide on how to buy and store the cryptocurrency Dent (DENT) more guides
The correct answer among the choices given is option B. The length of the metal threads at the end of a spark plug is called the insulator. The insulator is the main part of a spark plug and is typically made from alumina. This is a very hard ceramic material with high dielectric strength.
Simply speaking, a spark plug is just a spark gap affixed to a threaded insulated penetrator to get it into the cylinder head. The gap is from the tip of the center electrode of the plug that goes through a hermetic ceramic insulator core. Then a second terminal of the gap is made by a loop of steel connected to the outer steel ring of the plug.