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All free charges are integral multiples of a basic unit written:
Aq
Bn
CC
De
Answer & Solution
Correct answer: D. e
1. The charge on a body is never a completely arbitrary amount.
2. It always comes in whole numbers of one basic unit.
3. That unit is denoted by e.
_Source: NCERT Class 12 Physics Part I, Chapter 1, Electric Charges and Fields._
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