NEET Physics: Electrostatic Potential and Capacitance — MCQ Test 5

Q6. Two capacitors of \( 50 \, \text{pF} \) and \( 100 \, \text{pF} \) are connected in series. What is the equivalent capacitance?

Q7. In a system where a charged conductor is grounded while placed near a point charge, why does the potential of the conductor become zero?

Q8. Two charges \( 7 \, \mu\text{C} \) 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 parallel plate capacitor with \( C = 60 \, \text{pF} \) in air has a dielectric (\( K = 7 \)) inserted fully between plates. What is the new capacitance?

Q10. A \( 6 \, \mu\text{F} \) capacitor is charged to \( 300 \, \text{V} \). What is the energy stored in it?

NEET Physics — Electrostatic Potential and Capacitance

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A parallel plate capacitor with capacitance \( 200 \, \text{pF} \) has a dielectric (\( K = 5 \), thickness \( d/6 \)) inserted. What is the new capacitance? (Original separation \( d \)).

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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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10
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Key concepts covered in this specific test include Parallel, Capacitor, Capacitance, Dielectric, Thickness, and Inserted.

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. A parallel plate capacitor with capacitance \( 200 \, \text{pF} \) has a dielectric (\( K = 5 \), thickness \( d/6 \)) inserted. What is the new capacitance? (Original separation \( d \)).

  • A. 220 pF
  • B. 225 pF
  • C. 235 pF
  • D. 230.77 pF

Q2. Three capacitors \( 6 \, \text{pF} \), \( 12 \, \text{pF} \), and \( 24 \, \text{pF} \) are in parallel. What is the total capacitance?

  • A. 40 pF
  • B. 45 pF
  • C. 42 pF
  • D. 50 pF

Q3. A \( 4 \, \mu\text{F} \) capacitor charged to \( 150 \, \text{V} \) is connected to an uncharged \( 12 \, \mu\text{F} \) capacitor. What is the energy lost?

  • A. 0.03 J
  • B. 0.035 J
  • C. 0.04 J
  • D. 0.03375 J

Q4. A \( 8 \, \mu\text{F} \) capacitor charged to \( 80 \, \text{V} \) is connected to an uncharged \( 24 \, \mu\text{F} \) capacitor. What is the energy lost?

  • A. 0.015 J
  • B. 0.02 J
  • C. 0.018 J
  • D. 0.0192 J

Q5. A parallel plate capacitor has plates of area \( 0.03 \, \text{m}^2 \) and separation 0.5 mm in air. What is its capacitance? (Take \( \varepsilon_0 = 8.85 \times 10^{-12} \, \text{C}^2 \text{N}^{-1} \text{m}^{-2} \)).

  • A. 531 pF
  • B. 500 pF
  • C. 600 pF
  • D. 450 pF

+ 5 more questions in the actual test

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