NEET Physics: Electrostatic Potential and Capacitance — MCQ Test 24

Q6. A point charge \( Q = 6 \times 10^{-9} \, \text{C} \) is placed at the origin. Calculate the potential at a point 2 m away from the charge. (Take \( \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2 \text{C}^{-2} \)).

Q7. Three capacitors \( 2 \, \text{pF} \), \( 4 \, \text{pF} \), and \( 8 \, \text{pF} \) are in parallel. What is the total capacitance?

Q8. A spherical conductor of radius 20 cm has a charge of \( 8 \times 10^{-8} \, \text{C} \). What is the electric field at 50 cm from the center? (Take \( \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2 \text{C}^{-2} \)).

Q9. Why does the electric field due to an infinite charged sheet remain constant with distance from the sheet?

Q10. Two capacitors of \( 15 \, \text{pF} \) each are connected in series. What is the equivalent capacitance?

NEET Physics — Electrostatic Potential and Capacitance

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In an electrostatic field, if a positive charge is moved along an equipotential surface, what can be said about the work done by the electric field?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Electrostatic Potential and Capacitance. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Electrostatic, Positive, Equipotential, Electric, Identical, and Capacitors.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. In an electrostatic field, if a positive charge is moved along an equipotential surface, what can be said about the work done by the electric field?

  • A. It is zero
  • B. It depends on the path taken
  • C. It is proportional to the distance moved
  • D. It is negative

Q2. When two identical capacitors, one charged and one uncharged, are connected in parallel, why does the total energy decrease even though charge is conserved?

  • A. The capacitors mutually cancel their energies
  • B. Energy is lost as heat during charge redistribution
  • C. The total charge halves, reducing energy
  • D. The capacitors induce opposite potentials

Q3. A point charge \( Q = 21 \times 10^{-9} \, \text{C} \) is placed at the origin. Calculate the potential at a point 7 m away from the charge. (Take \( \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2 \text{C}^{-2} \)).

  • A. 27 V
  • B. 30 V
  • C. 24 V
  • D. 20 V

Q4. A \( 5 \, \mu\text{F} \) capacitor is charged to \( 200 \, \text{V} \). What is the energy stored in it?

  • A. 0.08 J
  • B. 0.12 J
  • C. 0.1 J
  • D. 0.15 J

Q5. When a conductor is placed in an external electric field, why does the potential throughout its volume become constant in electrostatic equilibrium?

  • A. Because the electric field inside is zero
  • B. Because charges accumulate only inside the conductor
  • C. Because the external field penetrates the conductor
  • D. Because the potential varies linearly inside

+ 5 more questions in the actual test

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