Which of the following precautions need not be taken while using electric gadgets/appliances/ circuit?$(a)$. We should never touch a lighted electric bulb connected to the mains.$(b)$. We should never experiment with the electric supply from the mains or a generator or an inverter.$(c)$. We should never use just any wire or strip of metal in place of a fuse.$(d)$. We should never turn the switch in ON position.

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While using electric gadgets/appliances/circuits, "We should never turn the switch in ON position." This precaution does not need to be taken.

So, option $(d)$ is correct.

Updated on 10-Oct-2022 13:30:09