Discussion
Which of the following is a good safety practice?
Answer: B
Using a screwdriver with a wooden handle while working on electric circuits is a good safety practice. Wood is an insulator, so the handle keeps the worker's hand from the live parts and reduces the risk of a shock. Tools for electrical work should have insulated handles.
A water pipe is a poor earthing path and is not accepted as an earth electrode, because it may be of plastic or have insulating joints and it can carry fault current to other people. Stopping a rotating motor with the hand risks injury from the moving parts, and touching bare conductors can give a shock. So only the second option is a good practice.
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