NEET Electrostatics PYQs & Practice Questions

10 free NEET Physics questions on Electrostatics, starting with previous year questions (2019–2026). Tap “Show answer” to check each one. No login needed.

Topics: Coulomb's Law · Capacitor · Dipole in Non-Uniform Electric Field · Potential of Combined Drops · Coulomb's Law - Charge Transfer · Electric Lines of Force and Equipotential Surfaces · Potential on Charged Conducting Spheres · Electric Field of a Dipole at Large Distance · Energy Stored in Capacitors - Charge Sharing · Properties of charged conductors · Surface charge density of connected conductors · Direction of dipole motion in non-uniform field

Q1NEET 2026Properties of charged conductors
Which of the following statements are correct? A. Inside a conductor, the electrostatic field is zero. B. Electric field at the surface of a charged conductor does not depend on its surface charge density. C. The interior of a charged conductor can have no excess charge in the static situation. D. At the surface of a charged conductor, the electrostatic field must be normal to the surface at every point. E. The electrostatic potential is zero everywhere inside a charged conductor.
- A. A, C and D only
- B. A, C and E only
- C. C, D and E only
- D. A, B and D only
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Answer: —
A, C, D are correct properties of conductors in electrostatic equilibrium. B is false (E=σ/ε0 depends on charge density). E is false (potential is constant, not necessarily zero).
Q2NEET 2022Electric Lines of Force and Equipotential Surfaces
The angle between the electric lines of force and the equipotential surface is:
- A. 0 degrees
- B. 45 degrees
- C. 90 degrees
- D. 180 degrees
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Answer: B — 45 degrees
Electric lines of force are always perpendicular to equipotential surfaces because no work is done moving a charge along an equipotential surface, which requires the field (and hence lines of force) to be perpendicular to it.
Q3NEET 2022Potential on Charged Conducting Spheres
Two hollow conducting spheres of radii R1 and R2 (R1 >> R2) have equal charges. The potential would be:
- A. More on bigger sphere
- B. More on smaller sphere
- C. Equal on both the spheres
- D. Dependent on the material property of the sphere
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Answer: A — More on bigger sphere
Potential of a charged sphere V = kQ/R. For equal charge Q, a smaller radius R2 gives a higher potential since V is inversely proportional to R.
Q4NEET 2022Electric Field of a Dipole at Large Distance
Two point charges -q and +q are placed at a distance of L, as shown in the figure. The magnitude of electric field intensity at a distance R (R>>L) varies as:
- A. 1/R^2
- B. 1/R^3
- C. 1/R^4
- D. 1/R^6
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Answer: A — 1/R^2
The two charges form an electric dipole. At large distances (R>>L) from a dipole, the electric field intensity falls off as 1/R^3, unlike a single point charge which falls off as 1/R^2.

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Q5NEET 2022Energy Stored in Capacitors - Charge Sharing
A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance C = 900 pF as shown in figure (b). The electrostatic energy stored by the system (b) is:
- A. 4.5 x 10^-6 J
- B. 3.25 x 10^-6 J
- C. 2.25 x 10^-6 J
- D. 1.5 x 10^-6 J
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Answer: B — 3.25 x 10^-6 J
Initial charge Q = CV = 900x10^-12 x 100 = 9x10^-8 C. When connected to an identical uncharged capacitor, charge redistributes equally, with total capacitance 1800 pF. Common voltage V' = Q/C_total = 9x10^-8/1800x10^-12 = 50 V. Energy = (1/2)*C_total*V'^2 = 0.5 x 1800x10^-12 x 2500 = 2.25x10^-6 J.
Q6NEET 2022Equipotential Surfaces
The angle between the electric lines of force and the equipotential surface is
- A. 0°
- B. 45°
- C. 90°
- D. 180°
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Answer: B — 45°
Electric field lines are always perpendicular (90°) to equipotential surfaces.
Q7NEET 2022Electric Dipole Field
Two point charges −q and +q are placed at a distance of L, as shown in the figure. The magnitude of the electric field intensity at a distance R(R>>L) varies as:
- A. 1/R²
- B. 1/R³
- C. 1/R⁴
- D. 1/R⁶
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Answer: A — 1/R²
For an electric dipole, the field at large distance varies as 1/R³.
Q8NEET 2022Capacitors
A capacitor of capacitance C = 900 pF is charged fully by 100 V battery B as shown in figure (a). Then it is disconnected from the battery and connected to another uncharged capacitor of capacitance C = 900 pF as shown in figure (b). The electrostatic energy stored by the system (b) is
- A. 4.5 × 10⁻⁶ J
- B. 3.25 × 10⁻⁶ J
- C. 2.25 × 10⁻⁶ J
- D. 1.5 × 10⁻⁶ J
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Answer: B — 3.25 × 10⁻⁶ J
Initial charge Q = CV = 900×10⁻¹²×100 = 9×10⁻⁸ C. When connected to identical uncharged capacitor, charge redistributes equally, each gets Q/2, common V' = 50 V. Energy = (1/2)(2C)(V'²) = C×V'² = 900×10⁻¹²×2500 = 2.25×10⁻⁶ J.

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Q9NEET 2021Capacitor
Energy stored in capacitor C at voltage V is:
- A. CV
- B. CV²
- C. ½CV²
- D. 2CV²
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Answer: B — CV²
U=½CV²=½QV=Q²/2C. Energy stored in electric field between capacitor plates. Also: since Q=CV, all three forms are equivalent.
Q10NEET 2021Dipole in Non-Uniform Electric Field
A dipole (+q and -q) is placed along the axis of a non-uniform electric field, with field lines diverging and closer together near the +q charge. In which direction will it move?
- A. towards the right as its potential energy will increase.
- B. towards the left as its potential energy will increase.
- C. towards the right as its potential energy will decrease.
- D. towards the left as its potential energy will decrease.
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Answer: B — towards the left as its potential energy will increase.
Field lines are closer (stronger field) at charge +q, so E1 > E2, giving a net force on the dipole towards the right. A system always moves to decrease its potential energy.

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