NCERT Exemplar V — task. Science CBSE, Class 7.

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Which of the following precautions need not be taken while using electric gadgets/appliances/circuit?

We should never touch a lighted electric bulb connected to the mains
We should never use just any wire or strip of metal in place of a fuse
We should never turn the switch in \(ON\) position
We should never experiment with the electric supply from the mains or a generator or an inverter

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28. NCERT Exemplar V