Question Detail

PHY 102 Coulomb's law and Electric Fields Objective Question

Question

Which of the following is true regarding the superposition principle for absolute potential?
Options
A Absolute potential is a vector quantity, so contributions are added vectorially.
B Negative charges contribute negative terms to the potential, while positive charges contribute positive terms.
Correct Answer
C The principle only applies to forces, not potentials.
D The absolute potential at infinity is considered undefined.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 11 states: 'Because of the superposition principle and the scalar nature of potential difference, the absolute potential at a point due to a number of point charges is V = k₀ Σ qᵢ/rᵢ'. It also clarifies: 'Negative q.'s contribute negative terms to the potential, while positive q.'s contribute positive terms.'

Hint

Remember whether potential is a scalar or vector quantity, and how charge signs affect it.

Question Info