. Which of the following cannot be charged by friction, if held by hand
Which of the following cannot be charged by friction, if held by hand
A. a plastic scale
B. a copper rod
C. an inflated balloon
D. a woollen cloth
Best Answer
Answer.B
All of the above substances are insulators whereas Copper rod is a conductor. As soon as we charge a copper rod by rubbing with another material, the electric charge flow through our hand and body and flows into the earth. As a result, the copper rod remains un-charged
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