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NEET UG PHYSICS Multiple Choice Questions (MCQs)
NEET UG - Electrostatics MCQs (151 to 165)
151. Which of the following laws explains the force between two point charges?
A) Newton's Law of Gravitation
B) Coulomb's Law
C) Gauss's Law
D) Ohm's Law
B) Coulomb's Law
C) Gauss's Law
D) Ohm's Law
Answer: B) Coulomb's Law
152. The force between two point charges is directly proportional to:
A) The product of the charges and inversely proportional to the square of the distance between them.
B) The product of the charges and directly proportional to the distance between them.
C) The sum of the charges and inversely proportional to the distance between them.
D) The sum of the charges and directly proportional to the square of the distance between them.
B) The product of the charges and directly proportional to the distance between them.
C) The sum of the charges and inversely proportional to the distance between them.
D) The sum of the charges and directly proportional to the square of the distance between them.
Answer: A) The product of the charges and inversely proportional to the square of the distance between them.
153. Which of the following represents the principle used to calculate the force between multiple point charges?
A) Superposition principle
B) Gauss's Law
C) Ampere's Law
D) Faraday's Law
B) Gauss's Law
C) Ampere's Law
D) Faraday's Law
Answer: A) Superposition principle
154. The electric field due to a positive point charge is:
A) Radial and directed towards the charge.
B) Radial and directed away from the charge.
C) Circular around the charge.
D) Zero everywhere.
B) Radial and directed away from the charge.
C) Circular around the charge.
D) Zero everywhere.
Answer: B) Radial and directed away from the charge.
155. The electric field lines due to a positive charge are:
A) Straight lines directed towards the charge.
B) Curved lines directed away from the charge.
C) Straight lines directed away from the charge.
D) Circular lines around the charge.
B) Curved lines directed away from the charge.
C) Straight lines directed away from the charge.
D) Circular lines around the charge.
Answer: C) Straight lines directed away from the charge.
156. The torque on an electric dipole placed in a uniform electric field is maximum when:
A) The dipole is aligned parallel to the electric field.
B) The dipole is aligned antiparallel to the electric field.
C) The dipole is perpendicular to the electric field.
D) The dipole is at any arbitrary angle.
B) The dipole is aligned antiparallel to the electric field.
C) The dipole is perpendicular to the electric field.
D) The dipole is at any arbitrary angle.
Answer: C) The dipole is perpendicular to the electric field.
157. The electric flux through a surface is proportional to:
A) The number of electric field lines passing through the surface.
B) The magnitude of the electric field at the surface.
C) The charge enclosed within the surface.
D) The surface area alone.
B) The magnitude of the electric field at the surface.
C) The charge enclosed within the surface.
D) The surface area alone.
Answer: A) The number of electric field lines passing through the surface.
158. Gauss's law helps in determining the electric field due to:
A) Uniformly charged spherical shell
B) Non-uniform charge distributions
C) Point charges only
D) Any type of charge distribution
B) Non-uniform charge distributions
C) Point charges only
D) Any type of charge distribution
Answer: A) Uniformly charged spherical shell
159. The electric potential at a point due to a point charge is:
A) Zero
B) Proportional to the distance from the charge
C) Inversely proportional to the distance from the charge
D) Independent of the distance from the charge
B) Proportional to the distance from the charge
C) Inversely proportional to the distance from the charge
D) Independent of the distance from the charge
Answer: C) Inversely proportional to the distance from the charge
160. Equipotential surfaces are surfaces where the:
A) Electric field is zero.
B) Electric potential is constant.
C) Electric flux is zero.
D) Electric potential varies linearly.
B) Electric potential is constant.
C) Electric flux is zero.
D) Electric potential varies linearly.
Answer: B) Electric potential is constant.
161. The capacitance of a parallel plate capacitor with a dielectric material between the plates is:
A) Increased
B) Decreased
C) Remains the same
D) Becomes zero
B) Decreased
C) Remains the same
D) Becomes zero
Answer: A) Increased
162. The potential energy of a system of two point charges depends on:
A) The distance between the charges and the magnitude of the charges.
B) The distance between the charges only.
C) The magnitude of the charges only.
D) The electric field at the point.
B) The distance between the charges only.
C) The magnitude of the charges only.
D) The electric field at the point.
Answer: A) The distance between the charges and the magnitude of the charges.
163. When a dielectric is placed between the plates of a parallel plate capacitor, the capacitance:
A) Increases
B) Decreases
C) Remains the same
D) Becomes zero
B) Decreases
C) Remains the same
D) Becomes zero
Answer: A) Increases
164. The energy stored in a capacitor is given by:
A) \( U = \frac{1}{2} C V^2 \)
B) \( U = C V \)
C) \( U = \frac{1}{2} C V \)
D) \( U = C^2 V^2 \)
B) \( U = C V \)
C) \( U = \frac{1}{2} C V \)
D) \( U = C^2 V^2 \)
Answer: A) \( U = \frac{1}{2} C V^2 \)
165. The electric field due to an infinitely long uniformly charged straight wire is:
A) Directly proportional to the distance from the wire.
B) Inversely proportional to the distance from the wire.
C) Independent of the distance from the wire.
D) Zero everywhere.
B) Inversely proportional to the distance from the wire.
C) Independent of the distance from the wire.
D) Zero everywhere.
Answer: B) Inversely proportional to the distance from the wire
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