When two conductors are accidentally connected it is

called a

It is called a short circuit

Explanation:

Most short circuits happen as a result of an undesirable accident. Assume you have two electric wires that are not insulated. When one end of the wire comes into contact with other end of the other wire, a short circuit will occur. Current that flows through a circuit loves to travel through a path where it gets less resistance. Therefore, in a short circuit, connecting two conducting wires together will result in a pathway that give less resistance than it usually requires. This, as a result can be fatal since all current will move towards a path that has little resistance.