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PHY 102 Test Compilation PHY 102 17 Objective Question

Question

Which of the following statement(s) is/are not correct about Gauss's law?
Options
A I and II only
B II and III only
C III and IV only
Correct Answer
D I, II, III and IV
Correct Answer

Option C is the correct answer.

Detailed Explanation

Let's analyze each statement about Gauss's Law:I. The net charge qenc is the algebraic sum of all the enclosed positive and negative charges. (Correct)II. The net charge qenc can be positive, negative or zero. (Correct)III. The net charge qenc cannot be determined. (Incorrect. The net charge can be determined from the total electric flux through a closed Gaussian surface using Φ = qenc / ε₀).IV. The net charge qenc is in the direction of the applied field. (Incorrect. Charge is a scalar quantity and does not have a direction. The electric field has direction, but not the charge itself).Therefore, statements III and IV are not correct.

Hint

Recall that charge is a scalar quantity and Gauss's law allows for the determination of enclosed charge from flux.

Question Info