In 1785, who used the calibrated torsion balance to measure the force between electric charges?
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Correct answer: D
Explanation
The correct answer is Option 4 i.e. Charles Augustin Coulomb.
In 1785, French physicist Charles-Augustin Coulomb utilized a calibrated torsion balance to measure the force between electric charges.
Coulomb is best known for formulating Coulomb's Law, which describes the electrostatic force between two point charges.
The law states that the force between two charges is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them.