Question

1. which of the following is not a schematic symbol for a switch?

Explanation:

In electrical engineering, a switch schematic symbol represents a device to open or close an electrical circuit. Option a is a single - pole double - throw switch symbol, option d is a single - pole single - throw switch symbol. Option b is a symbol for an inductor (a coil), not a switch. Option c is not a standard switch symbol either but is less common in basic electrical schematics compared to the inductor symbol which is well - known. The most recognizable non - switch symbol here is the inductor symbol (b).

Answer:

B. The wavy - line symbol (b) is not a schematic symbol for a switch.