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Switches - Electric

Electric switches are known as relay. Electric switches break an electrical current, hence effectively interrupting the current or else diverting it from one conductor to another. Electric switches are among the most common types of control devices, used wherever electricity is available. Electric switches use an electromagnet to operate a switching mechanism mechanically, however other operating principles can also be used. A switch may be directly manipulated by a human as a control signal to a system or to control power flow in a circuit, such as a light switch.