Final answer:
A spring-loaded switch is a manual switch containing a spring or restoring force that returns the actuator to a certain position.
Step-by-step explanation:
Physics: Manual Switches
A manual switch that contains a spring or some other restoring force that returns the actuator to a certain position is called a spring-loaded switch. The restoring force in this switch is provided by the spring, which pulls the actuator back to its original position.
For example, in option (b), the Frestore is the force exerted by the spring on the hand, and it pulls to the left. This means that when the actuator is pushed or pulled away from its original position, the spring will exert a force to return it back to that position.