Question Detail

PHY 102 ELECTROSTATICS Objective Question
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Question

If a charge is located outside a closed surface, how does it contribute to the electric flux out of that surface?
Options
A It contributes positively, as its field lines always exit the surface.
B It contributes negatively, as its field lines always enter the surface.
C It contributes zero net flux, as its field lines cross the surface an equal number of times entering and exiting.
Correct Answer
D Its contribution depends on the shape of the closed surface.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 14 states, 'If the surface does not enclose any particular charge, such a charge does not contribute to the electric flux out of the surface. This is because the field of the charge crosses the surface equal times in and out.'

Hint

Visualize the electric field lines from an external charge passing through a closed boundary.

Question Info

Course: PHY 102
Topic: ELECTROSTATICS
Type: Objective
Difficulty: Not specified
Question 821 of 1819
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