Physics
It is dangerous to connect the switch in the neutral wire. Explain your answer.
Answer
It is dangerous to connect the switch in the neutral wire because in the 'off' position of the switch the appliance remains connected to the high potential terminal through the live wire, although no current flows through the appliance because the return path is incomplete. However, it is not safe to carry out repair work in this condition because on touching the live wire in the appliance the current will pass through the body of the person and he may get a fatal shock.
Further, due to some fault if the live wire touches the metallic body of the appliance, then it is not safe to touch the appliance even from outside.
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