Gaussian Surface -Multiple Choice Questions Quiz

Interactive MCQs on “Gaussian Surface”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is a Gaussian surface?

(a) A surface with a Gaussian curvature
(b) A closed surface used for calculating electric fields
(c) A surface with a constant electric potential
(d) A surface with a uniform charge distribution

Question 2: Which of the following statements is true regarding a Gaussian surface inside a charged conductor?

(a) The electric field inside a conductor is zero, so a Gaussian surface is not needed.
(b) A Gaussian surface inside a charged conductor encloses a net charge.
(c) A Gaussian surface inside a charged conductor encloses no charge.
(d) A Gaussian surface inside a charged conductor always has a non-zero electric field.

Question 3: What is the relationship between the electric flux (ΦE) through a Gaussian surface and the net charge enclosed (Q_enc) by that surface?

(a) ΦE = Q_enc
(b) ΦE = Q_enc / ε0
(c) ΦE = ε0 / Q_enc
(d) ΦE = 0

Question 4: What is the electric flux through a Gaussian surface when it encloses no net charge?

(a) Zero
(b) Q_enc
(c) ε0
(d) Infinite

Question 5: For which type of charge distribution is Gauss's law particularly useful?

(a) Uniform charge distribution
(b) Point charge distribution
(c) Non-uniform charge distribution
(d) Irregular charge distribution

Question 6: What is the net electric flux through a closed Gaussian surface if it encloses a positive point charge (Q)?

(a) Q
(b) -Q
(c) Zero
(d) Q/ε0

Question 7: A Gaussian surface is a closed surface. Which of the following shapes can be used as a Gaussian surface?

(a) Cylinder with open ends
(b) Sphere with a hole
(c) Cuboid with one open face
(d) Sphere with no holes

Question 8: If a Gaussian surface encloses a negative charge, what is the sign of the net electric flux through that surface?

(a) Positive
(b) Negative
(c) Zero
(d) Depends on the magnitude of the charge

Question 9: What is the SI unit of electric flux?

(a) Volts (V)
(b) Coulombs (C)
(c) Farads (F)
(d) Volts per meter (V/m)

Question 10: Which mathematical law is based on the concept of a Gaussian surface?

(a) Ampere's law
(b) Coulomb's law
(c) Gauss's law
(d) Faraday's law