Question Detail

PHY 102 Electrostatics: Electric Charge and Coulomb's Law Objective Question
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Question

In a uniform electric field, a dipole experiences no net 'force' but a net 'torque' because:
Options
A The field is zero at the center.
B The forces on the two opposite charges are equal in magnitude but in opposite directions.
Correct Answer
C The charges are both positive.
D The dipole moment is always zero in uniform fields.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Since the field is uniform, the +Q charge is pulled one way and the -Q charge is pulled the other way with equal force, resulting in zero net force but a rotation (torque).

Hint

The forces cancel out linearly but not rotationally.

Question Info

Course: PHY 102
Topic: Electrostatics: Electric Charge and Coulomb's Law
Type: Objective
Difficulty: Not specified
Question 162 of 1819
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