| In
electric, a switch is an electrical component that can break an electrical
circuit, interrupting the current or diverting
it from one conductor to another.The most
familiar form of switch is a manually operated electromechanical device
with one or more sets of electrical contacts.
Each
set of contacts can be in one of two states: either 'closed' meaning
the contacts are touching and electricity
can flow between them, or 'open', meaning
the contacts are separated and nonconducting.
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