Headaches can lead to scalp pain and to pain in any area of the face, neck or head. Several types of headaches may cause scalp pain, such as migraine, sinus headache, tension headache, and those caused by nerve involvement such as occipital neuralgia.
The circuit breaker. The circuit breaker does the same job as the fuse, but works in a different way. A spring-loaded push switch is held in the closed position by a spring-loaded soft iron bolt. An electromagnet is arranged so that it can pull the bolt away from the switch.
Circuit Breakers. A circuit breaker is a switch that automatically interrupts electrical flow in a circuit in case of an overload or short. Homes built or rewired since the mid-1960s use circuit breakers to monitor the electricity coming into the home.