NEET Physics: Current Electricity — MCQ Test 3

Q6. A cell of emf \( 7 \, \text{V} \) and internal resistance \( 1 \, \Omega \) is connected to a \( 6 \, \Omega \) resistor. What is the terminal voltage?

Q7. A \( 10 \, \text{V} \) battery with \( 1 \, \Omega \) internal resistance is connected to a \( 9 \, \Omega \) resistor. What is the power dissipated in the internal resistance?

Q8. In a circuit with two resistors of different resistances in series, which resistor dissipates more power if the same current flows through both?

Q9. Two cells of emf \( 2.5 \, \text{V} \) and \( 3.5 \, \text{V} \) with internal resistances \( 0.5 \, \Omega \) and \( 1 \, \Omega \) are connected in series. What is the equivalent emf?

Q10. A \( 5 \, \Omega \) resistor carries a current of \( 2 \, \text{A} \) for \( 10 \, \text{s} \). How much energy is dissipated as heat?

NEET Physics — Current Electricity

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A \( 6 \, \text{V} \) battery with \( 0.5 \, \Omega \) internal resistance is connected to a \( 5.5 \, \Omega \) resistor. What is the power dissipated in the external resistor?

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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 Current Electricity. 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 Internal, Resistance, Connected, Resistor, Dissipated, and External.

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 \( 6 \, \text{V} \) battery with \( 0.5 \, \Omega \) internal resistance is connected to a \( 5.5 \, \Omega \) resistor. What is the power dissipated in the external resistor?

  • A. \( 4.5 \, \text{W} \)
  • B. \( 5.0 \, \text{W} \)
  • C. \( 5.25 \, \text{W} \)
  • D. \( 5.5 \, \text{W} \)

Q2. A \( 18 \, \text{V} \) battery with negligible internal resistance is connected to a \( 6 \, \Omega \) and \( 12 \, \Omega \) resistor in series. What is the power dissipated in the \( 6 \, \Omega \) resistor?

  • A. \( 5 \, \text{W} \)
  • B. \( 6 \, \text{W} \)
  • C. \( 7 \, \text{W} \)
  • D. \( 8 \, \text{W} \)

Q3. A circuit has a \( 28 \, \text{V} \) battery with \( 4 \, \Omega \) internal resistance and three resistors \( 4 \, \Omega \), \( 8 \, \Omega \), \( 16 \, \Omega \) in parallel. What is the current through the \( 8 \, \Omega \) resistor?

  • A. \( 1.0 \, \text{A} \)
  • B. \( 1.2 \, \text{A} \)
  • C. \( 1.25 \, \text{A} \)
  • D. \( 1.27 \, \text{A} \)

Q4. A circuit has a \( 16 \, \text{V} \) battery with \( 2 \, \Omega \) internal resistance and three resistors \( 2 \, \Omega \), \( 4 \, \Omega \), \( 8 \, \Omega \) in parallel. What is the current through the \( 2 \, \Omega \) resistor?

  • A. \( 2.7 \, \text{A} \)
  • B. \( 2.8 \, \text{A} \)
  • C. \( 2.9 \, \text{A} \)
  • D. \( 2.91 \, \text{A} \)

Q5. A wire of length \( 3 \, \text{m} \) and cross-sectional area \( 3 \times 10^{-6} \, \text{m}^2 \) has a resistance of \( 5 \, \Omega \). What is the resistivity of the material?

  • A. \( 5.0 \times 10^{-6} \, \Omega \text{m} \)
  • B. \( 6.0 \times 10^{-6} \, \Omega \text{m} \)
  • C. \( 7.0 \times 10^{-6} \, \Omega \text{m} \)
  • D. \( 8.0 \times 10^{-6} \, \Omega \text{m} \)

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