Question Detail

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

Question

What happens to the electric field (E) at infinity for a point charge?
Options
A It becomes infinite.
B It approaches zero.
Correct Answer
C It stays at the value kQ.
D It reverses direction.
Correct Answer

Option B is the correct answer.

Detailed Explanation

As the distance r becomes infinitely large, the 1/r² term in the E-field equation approaches zero.

Hint

Limit as r goes to infinity.

Question Info