Asked in PMC Practice Test 7 (2021) 2021Moderate

The minimum charge on an object cannot be less than:

Correct answer: A. 1.6 x 10^-19 C

  • A. 1.6 x 10^-19 C
  • B. 9 x 10^9 C
  • C. 9.1 x 10^-31 C
  • D. 1.6 x 10^-27 C

Explanation

The smallest unit charge is that of the electron or a proton in magnitude i.e. 1.6x10(-19)

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Coulomb's law gives the electrostatic force between two point charges in terms of their magnitudes, separation and the medium between them. Questions involve attraction and repulsion, the inverse square relationship, superposition of forces and vector direction, which must not be confused with the electric field produced by a charge.

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