Question Detail

PHY 102 Coulomb's law and Electric Fields Objective Question

Question

How is the absolute potential at a point due to a number of point charges determined, according to the document?
Options
A It is the vector sum of the potentials due to individual charges.
B It is the scalar sum of the potentials due to individual charges.
Correct Answer
C It is the product of the potentials due to individual charges.
D It is the average of the potentials due to individual charges.
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 = k_o Σ q_i/r_i'. Since potential is a scalar quantity, individual potentials simply add algebraically.

Hint

Remember that potential is a scalar quantity, unlike electric field or force which are vectors.

Question Info