A ____ can be described as a solenoid with switching contacts attached to a movable plunger.
A)coil
B)relay
C)hydraulic circuit
D)pneumatic circuit

Question

Quizplus · Accepted Answer

A relay is a solenoid device that uses an electromagnetic field to control switching contacts attached to a movable plunger. The coil creates the electromagnetic field that pulls the plunger to open or close the contacts, allowing the relay to switch electrical circuits on and off. Hydraulic and pneumatic circuits involve fluid power instead of electricity, and coils are a common component in both types of systems, but they do not have switching contacts like a relay.

A ____ Can Be Described as a Solenoid with Switching