Question Detail

PHY 102 Test Compilation PHY 102 10 Objective Question

Question

Which of the following statements is CORRECT?
Options
A In theoretical calculation, it is usually convenient to take a point at infinite distance as infinite potential.
B For most practical situations, the earth is taken as having zero potential.
Correct Answer
C For most practical situations, the earth is taken as having infinite potential.
D In theoretical calculation, it is usually convenient to take a point at infinite distance as non-zero potential.
Correct Answer

Option B is the correct answer.

Detailed Explanation

In physics, for theoretical calculations involving isolated charges or systems, it is customary to define the electric potential at an infinite distance as zero. For practical applications, particularly in electrical engineering, the Earth is considered a large conductor capable of absorbing or supplying charge without significant change in its own potential, making it a convenient reference point for zero potential.

Hint

Consider common conventions for defining zero potential in both theoretical and practical contexts.

Question Info