In a circuit diagram, a zigzag line drawn inside a circle represent a type of switch true or false

The zigzag line is a resistor but the circle indicates that it has some other aspect going on too, such as a temperature or light dependency. Although the symbols for those would usually have other things too, such as small wiggly arrows to indicate light.

It is false that in a circuit diagram, a zigzag line drawn inside a circle represent a type of switch. It represents a type of resistor.