NEET Physics Electric Flux and Gausss MCQs

Question. The Gaussian surface
(a) can pass through a continuous charge distribution
(b) can pass through any system of discrete charges
(c) cannot pass through a continuous charge distribution
(d) can pass through a continuous charge distribution as well as any system of discrete charges.

Answer: A

Question: Gauss's law is valid for
(a) any closed surface
(b) only regular close surfaces
(c) any open surface
(d) only irregular open surfaces

Answer: A

Question: The electric field inside a spherical shell of uniform surface charge density is
(a) zero
(b) constant different from zero
(c) proportional to the distance from the curve
(d) None of the options

Answer: A

Question: Positive electric flux indicates that electric lines of force are directed
(a) outwards
(b) inwards
(c) Both
(d) None of the options

Answer: A

Question. The Gaussian surface
(a) can pass through a continuous charge distribution
(b) can pass through any system of discrete charges
(c) cannot pass through a continuous charge distribution
(d) can pass through a continuous charge distribution as well as any system of discrete charges.

Answer: A

Question. Gauss's law is valid for
(a) any closed surface
(b) only regular close surfaces
(c) any open surface
(d) only irregular open surfaces

Answer: A

Question. The electric field inside a spherical shell of uniform surface charge density is
(a) zero
(b) constant different from zero
(c) proportional to the distance from the curve
(d) None of the options

Answer: A

Question. An electric dipole is put in north-south direction in a sphere filled with water. Which statement is correct?
(a) Electric flux entering into sphere and leaving the sphere are same
(b) Water does not permit electric flux to enter into sphere
(c) Electric flux is coming out of sphere
(d) Electric flux is coming towards sphere

Answer: A

Question. A charge Q is enclosed by a Gaussian spherical surface of radius R. If the radius is doubled, then the outward electric flux will
(a) remain the same
(b) increase four times
(c) be reduced to half
(d) be doubled

Answer: A

Question.  A point charge is kept at the centre of metallic insulated spherical shell. Then
(a) net induced charge on the sphere is zero
(b) electric potential inside the sphere is zero
(c) electric field inside the sphere is zero
(d) electric field out side the sphere is zero

Answer: A

Question. Positive electric flux indicates that electric lines of force are directed
(a) outwards
(b) inwards
(c) Both
(d) None of the options

Answer: A

Question. Electric flux over a surface in an electric field may be
(a) All of these
(b) negative
(c) positive
(d) zero

Answer: A

Question. Electric charges are distributed in a small volume. The flux of the electric field through a spherical surface of radius 1 m surrounding the total charge is 100 V-m. The flux over the concentric sphere of radius 2 m will be
(a) 100 V-m
(b) 200 V-m
(c) 50 V-m
(d) 25 V-m

Answer: A