It is safe. 1).To touch a lighted electric bulb. 2). To carry experiments with electric supply from the mains. 3). To use electric cells for experiments. 4). To carry experiments with electric supply off from the mains.
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1
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1 not safe 2 safe 3safe 4 safe
Answered by
1
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4 is safer than all as no electricity supply will be done so it is safer
pls mark as brainliest
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