Question

a switch that completes a circuit when pressure is applied is a: a) hinged pawl switch b) momentary contact switch c) ganged switch d) mercury switch

Explanation:

A momentary - contact switch is a type of switch that closes (completes a circuit) when pressure is applied and opens when the pressure is released. Hinged pawl switches are for different mechanical functions, ganged switches are used to control multiple circuits simultaneously, and mercury switches operate based on the movement of mercury.

Answer:

B. Momentary contact switch