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Free charges come in integral multiples of a basic unit written as:
An
Bc
Ce
Dq
Answer & Solution
Correct answer: C. e
1. Charge is quantised.
2. Any charge q equals a whole number times a basic unit.
3. That basic unit is written e.
_Source: NCERT Class 12 Physics Part I, Chapter 1, Electric Charges and Fields._
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