NEET Physics: Current Electricity — MCQ Test 13

Q6. A wire of length \( 7 \, \text{m} \) and resistance \( 14 \, \Omega \) is stretched to \( 14 \, \text{m} \). What is the new resistance?

Q7. A \( 6 \, \Omega \) resistor dissipates \( 24 \, \text{W} \) of power. What is the current through it?

Q8. A circuit has a \( 10 \, \text{V} \) battery with negligible internal resistance connected to two resistors \( 5 \, \Omega \) and \( 10 \, \Omega \) in series. What is the power dissipated in the \( 10 \, \Omega \) resistor?

Q9. A copper wire of cross-sectional area \( 5 \times 10^{-7} \, \text{m}^2 \) carries a current of \( 1.7 \, \text{A} \). If \( n = 8.5 \times 10^{28} \, \text{m}^{-3} \) and \( e = 1.6 \times 10^{-19} \, \text{C} \), what is the drift speed?

Q10. What is the key factor determining the maximum current a battery can supply?

NEET Physics — Current Electricity

Free MCQ Test 13 of 24

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A circuit has a \( 14 \, \text{V} \) battery with \( 2 \, \Omega \) internal resistance and two resistors \( 8 \, \Omega \) and \( 4 \, \Omega \) in parallel. What is the total current?

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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, Resistors, Parallel, Resistor, and Dissipates.

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 circuit has a \( 14 \, \text{V} \) battery with \( 2 \, \Omega \) internal resistance and two resistors \( 8 \, \Omega \) and \( 4 \, \Omega \) in parallel. What is the total current?

  • A. \( 2.8 \, \text{A} \)
  • B. \( 2.9 \, \text{A} \)
  • C. \( 3.0 \, \text{A} \)
  • D. \( 3.2 \, \text{A} \)

Q2. A circuit has a \( 10 \, \text{V} \) battery with \( 2 \, \Omega \) internal resistance and two resistors \( 4 \, \Omega \) and \( 6 \, \Omega \) in parallel. What is the total current?

  • A. \( 2.0 \, \text{A} \)
  • B. \( 2.1 \, \text{A} \)
  • C. \( 2.27 \, \text{A} \)
  • D. \( 2.5 \, \text{A} \)

Q3. A \( 10 \, \Omega \) resistor dissipates \( 25 \, \text{W} \) of power. What is the current through it?

  • A. \( 1.58 \, \text{A} \)
  • B. \( 1.6 \, \text{A} \)
  • C. \( 1.8 \, \text{A} \)
  • D. \( 2.0 \, \text{A} \)

Q4. Under what condition does Ohm’s law fail to hold true for a conductor?

  • A. When temperature increases
  • B. When current is constant
  • C. When resistance depends on current
  • D. When voltage is zero

Q5. Two cells of emf \( 2 \, \text{V} \) and \( 4 \, \text{V} \) with internal resistances \( 0.5 \, \Omega \) and \( 1.5 \, \Omega \) are connected in series. What is the equivalent emf?

  • A. \( 6.0 \, \text{V} \)
  • B. \( 6.5 \, \text{V} \)
  • C. \( 7.0 \, \text{V} \)
  • D. \( 8.0 \, \text{V} \)

+ 5 more questions in the actual test

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