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Coulomb measured the force between charges using a balance that is:
ATorsional
BSpring made
CBeam based
DDigital run
Answer & Solution
Correct answer: A. Torsional
1. The forces involved are extremely small.
2. A very sensitive instrument was needed.
3. Coulomb used a torsion balance.
_Source: NCERT Class 12 Physics Part I, Chapter 1, Electric Charges and Fields._
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