Question Detail

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

What happens to the electric field strength at a point if the distance from a point charge is doubled?
Options
A The field strength doubles.
B The field strength is halved.
C The field strength is reduced to one-fourth.
Correct Answer
D The field strength remains constant.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Since E = kQ/r², doubling the distance (2r) result in (2r)² = 4r² in the denominator, making the field one-fourth as strong.

Hint

Follow the inverse-square law for E-fields.

Question Info

Course: PHY 102
Topic: Electrostatics: Electric Charge and Coulomb's Law
Type: Objective
Difficulty: Not specified
Question 129 of 1819
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