Question Detail

PHY 102 ELECTROSTATICS Objective Question

Question

Which of the following characteristics defines a uniform electric field, as described in the document?
Options
A Field lines are straight, evenly spaced, and point in the same direction.
Correct Answer
B Field lines are curved, unevenly spaced, but all point towards a central charge.
C Field lines are straight, but their spacing varies, indicating changing magnitude.
D Field lines are not straight, but their magnitude is constant along the line.
Correct Answer

Option A is the correct answer.

Detailed Explanation

On page 10 and further illustrated on page 11 (Fig 2.6a description), the document states that a uniform electric field must be uniform in both magnitude and direction. This implies that 'field lines are evenly spaced' (constant magnitude) and 'field vectors are straight' and point in the same direction (constant direction).

Hint

A vector is constant only if both its magnitude and direction are constant.

Question Info