A glass rod when rubbed with silk cloth acquires a charge 1.6×10−13C. What is the charge on the silk cloth?
−1.6×10−19C
1.6×10−13C
−1.6×10−13C
1.6×10−19C
A
1.6×10−13C
B
1.6×10−19C
C
−1.6×10−13C
D
−1.6×10−19C
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Solution
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When a glass rod is rubbed with silk, both gets electrified due to charging by friction. Given, glass rod acquires positive charge =1.6×10−31C. So silk acquires equal and opposite charge as that on glass rod. Hence the answer is −1.6×10−13C.
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