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.
How do you know if a circuit breaker will work when called upon to interrupt an electrical fault or short-circuit? The answer is, you probably donât know for sure. If unusually high currents exceed the capability of protective devices in the power system, a short-circuit can cause the devices to explode like a bomb.