what is the use of plug key in circuit e
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·A plug key is an electrical component which acts like a switch. A small metallic key is provided which is inserted in a metallic base to switch on the circuit and if it is taken off from its base then the circuit get switched off.
·A plug key is an electrical component which acts like a switch. A small metallic key is provided which is inserted in a metallic base to switch on the circuit and if it is taken off from its base then the circuit get switched off.
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