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NEET Physics: Electrostatic Potential and Capacitance. Chapter-wise Practice Questions and Test

Electrostatic Potential and Capacitance is a Class 12 Physics chapter that carries about 5.0% of the Physics questions in NEET. Practise it with 48 questions covering 2 topics, each with an explanation.

Practise Electrostatic Potential and Capacitance

Sets of 15 questions that adapt to your level, with an explanation for every answer.

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Topics covered in Electrostatic Potential and Capacitance

How often Electrostatic Potential and Capacitance has come up in NEET

Across the 13 previous year papers, Electrostatic Potential and Capacitance had 25 questions, about 1.9 a year. The most in one paper was 4, in NEET 2021.

PaperQuestions from this chapter
NEET 20262
NEET 20251
NEET 20244
NEET 20231
NEET 20222
NEET 20214
NEET 20203
NEET 20190
NEET 20181
NEET 20172
NEET 20161
Re-AIPMT 20151
AIPMT 20143

Sample questions on Electrostatic Potential and Capacitance with answers

8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.

Question 1: Capacitance of a Parallel Plate Capacitor

The dielectric strength of a material is the:

  1. A capacitance per unit area
  2. B minimum electric field needed to polarise it
  3. C ratio of its permittivity to that of vacuum
  4. D maximum electric field it can withstand without breaking down

Answer: D. maximum electric field it can withstand without breaking down

Why: Above this field, the dielectric becomes conducting (breakdown) and sparks occur.

Question 2: Electric Potential due to a Point Charge

The equipotential surfaces in a uniform electric field are:

  1. A spheres
  2. B planes parallel to the field
  3. C cylinders along the field
  4. D planes perpendicular to the field

Answer: D. planes perpendicular to the field

Why: The field is perpendicular to equipotentials everywhere and points towards decreasing potential.

Question 3: Capacitance of a Parallel Plate Capacitor

The field between the plates of a parallel plate capacitor with a potential difference of 100 V and a separation of 1 cm is:

  1. A 1 V/m
  2. B 10⁶ V/m
  3. C 10² V/m
  4. D 10⁴ V/m

Answer: D. 10⁴ V/m

Why: E = V/d = 100/0.01 = 10⁴ V/m.

Question 4: Electric Potential due to a Point Charge

The potential at a distance of 0.3 m from a point charge of 3 nC is (k = 9 × 10⁹ N m²/C²):

  1. A 90 V
  2. B 27 V
  3. C 9 V
  4. D 900 V

Answer: A. 90 V

Why: V = kq/r = 9 × 10⁹ × 3 × 10⁻⁹/0.3 = 90 V.

Question 5: Capacitance of a Parallel Plate Capacitor

Two capacitors of 2 μF and 3 μF are connected in parallel. Their equivalent capacitance is:

  1. A 6 μF
  2. B 2.5 μF
  3. C 5 μF
  4. D 1.2 μF

Answer: C. 5 μF

Why: Capacitances add in parallel: 2 + 3 = 5 μF.

Question 6: Electric Potential due to a Point Charge

Four equal charges q are placed at the corners of a square of side a. The potential at the centre is:

  1. A zero
  2. B 4√2 kq/a
  3. C 2√2 kq/a
  4. D 4kq/a

Answer: B. 4√2 kq/a

Why: Each charge is at a distance a/√2, so V = 4 × kq/(a/√2) = 4√2 kq/a.

Question 7: Capacitance of a Parallel Plate Capacitor

When a dielectric slab of constant K completely fills the space between the plates of a parallel plate capacitor, its capacitance becomes:

  1. A K² times the original
  2. B 1/K times the original
  3. C unchanged
  4. D K times the original

Answer: D. K times the original

Why: C = Kε₀A/d, so filling the gap with a dielectric multiplies the capacitance by K.

Question 8: Electric Potential due to a Point Charge

The work done in moving a charge between two points on the same equipotential surface is:

  1. A positive
  2. B zero
  3. C equal to qE
  4. D negative

Answer: B. zero

Why: There is no potential difference between the points, so W = qΔV = 0.

Practise all of Electrostatic Potential and Capacitance
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Frequently asked questions

How many questions come from Electrostatic Potential and Capacitance in NEET?

Electrostatic Potential and Capacitance carries about 5.0% of the Physics questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 25 times, about 1.9 questions a year.

Which class is Electrostatic Potential and Capacitance from?

Electrostatic Potential and Capacitance is a Class 12 Physics chapter in the NCERT syllabus.

Where can I practise Electrostatic Potential and Capacitance questions for NEET?

NeetVictory has 48 practice questions on Electrostatic Potential and Capacitance, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.

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