NDA 2017 Physics question

Suppose a rod is given a negative charge by rubbing it with wool. Which one of the following statements is correct in this case ?

(A)The positive charges are transferred from rod to wool
(B)The positive charges are transferred from wool to rod
(C)The negative charges are transferred from rod to wool
(D)The negative charges are transferred from wool to rodCorrect

Answer: (D)

Solution

In charging by friction only electrons, which carry negative charge, are transferred; the positive charges (protons) are fixed in the nuclei and do not

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Question ID VK-030760