NEET Physics: Electrostatic Potential and Capacitance — MCQ Test 7

Q6. Three capacitors \( 10 \, \text{pF} \), \( 20 \, \text{pF} \), and \( 40 \, \text{pF} \) are in parallel. What is the total capacitance?

Q7. A spherical conductor of radius 6 cm has a charge of \( 6 \times 10^{-8} \, \text{C} \). What is the potential at its surface? (Take \( \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2 \text{C}^{-2} \)).

Q8. Two charges \( 10 \, \mu\text{C} \) and \( -2 \, \mu\text{C} \) are at \( (8, 0, 0) \) and \( (-8, 0, 0) \, \text{cm} \). What is the potential at midpoint? (Take \( \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2 \text{C}^{-2} \)).

Q9. A charge of \( 8 \, \mu\text{C} \) is moved from infinity to a point where the potential is \( 50 \, \text{V} \). What is the work done?

Q10. A charged conductor is surrounded by a thin concentric hollow conducting shell. If the shell is grounded, what happens to the charge on the inner conductor?

NEET Physics — Electrostatic Potential and Capacitance

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Three charges \( +8 \, \mu\text{C} \), \( -5 \, \mu\text{C} \), and \( +3 \, \mu\text{C} \) are at \( (0, 0, 0) \), \( (8, 0, 0) \), and \( (0, 8, 0) \, \text{m} \). What is the potential at \( (8, 8, 0) \, \text{m} \)? (Take \( \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2 \text{C}^{-2} \)).

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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 Potential, Varepsilon, Capacitor, Connected, Uncharged, and Difference.

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. Three charges \( +8 \, \mu\text{C} \), \( -5 \, \mu\text{C} \), and \( +3 \, \mu\text{C} \) are at \( (0, 0, 0) \), \( (8, 0, 0) \), and \( (0, 8, 0) \, \text{m} \). What is the potential at \( (8, 8, 0) \, \text{m} \)? (Take \( \frac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \, \text{Nm}^2 \text{C}^{-2} \)).

  • A. 4000 V
  • B. 4113 V
  • C. 4200 V
  • D. 4300 V

Q2. A \( 16 \, \mu\text{F} \) capacitor charged to \( 10 \, \text{V} \) is connected to an uncharged \( 16 \, \mu\text{F} \) capacitor. What is the final potential difference?

  • A. 4 V
  • B. 6 V
  • C. 5 V
  • D. 8 V

Q3. In an isolated system of two capacitors initially charged and then connected in parallel with opposite polarities, what happens to the final energy of the system compared to the initial energy?

  • A. Final energy is less than initial energy due to heat loss
  • B. Final energy equals initial energy as charge is conserved
  • C. Final energy is greater due to increased potential
  • D. Final energy becomes zero as charges cancel out

Q4. In a parallel plate capacitor with a partially inserted dielectric slab while maintaining constant charge, why does the capacitance decrease as the slab is withdrawn?

  • A. The electric field increases
  • B. The charge on the plates decreases
  • C. The potential difference remains constant
  • D. The effective dielectric constant decreases

Q5. Why does the potential energy of a dipole in a uniform field increase when rotated from alignment (\( \theta = 0^\circ \)) to perpendicular (\( \theta = 90^\circ \))?

  • A. The field strength increases
  • B. The dipole moment increases
  • C. The torque becomes zero
  • D. Work is done against the aligning torque

+ 5 more questions in the actual test

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