NEET Physics: Electric Charges and Fields — MCQ Test 10

Q6. A plastic rod gains \( 4.8 \times 10^{-8} \, \text{C} \) of negative charge when rubbed. How many electrons were transferred to it?

Q7. An infinite line charge has \( \lambda = 1.2 \times 10^{-6} \, \text{C/m} \). What is the electric field at 40 cm?

Q8. Two charges \( +10 \, \mu\text{C} \) and \( -2 \, \mu\text{C} \) are 80 cm apart. What is the distance from \( +10 \, \mu\text{C} \) where the electric field is zero?

Q9. A point charge \( -9 \, \mu\text{C} \) is at the origin. What is the electric field magnitude at a point 6 m along the x-axis?

Q10. A uniform field \( E = 6 \times 10^3 \, \text{N/C} \) is along the y-axis. What is the flux through a rectangle of 40 cm × 25 cm in the xz-plane at 45° to the y-axis?

NEET Physics — Electric Charges and Fields

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A conducting sphere of radius 27 cm has an electric field of \( 6 \times 10^3 \, \text{N/C} \) at 54 cm from its center. What is the charge?

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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 Electric Charges and Fields. 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 Conducting, Electric, Distance, Infinite, Magnitude, and Acquires.

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 conducting sphere of radius 27 cm has an electric field of \( 6 \times 10^3 \, \text{N/C} \) at 54 cm from its center. What is the charge?

  • A. \( 1.8 \times 10^{-7} \, \text{C} \)
  • B. \( 1.9 \times 10^{-7} \, \text{C} \)
  • C. \( 1.92 \times 10^{-7} \, \text{C} \)
  • D. \( 1.944 \times 10^{-7} \, \text{C} \)

Q2. Two charges \( +12 \, \mu\text{C} \) and \( -3 \, \mu\text{C} \) are 60 cm apart. What is the distance from \( +12 \, \mu\text{C} \) where the electric field is zero?

  • A. 35 cm
  • B. 38 cm
  • C. 39 cm
  • D. 40 cm

Q3. An infinite line charge has \( E = 6.3 \times 10^5 \, \text{N/C} \) at 7 cm. What is \( \lambda \)?

  • A. \( 2.3 \times 10^{-6} \, \text{C/m} \)
  • B. \( 2.4 \times 10^{-6} \, \text{C/m} \)
  • C. \( 2.42 \times 10^{-6} \, \text{C/m} \)
  • D. \( 2.45 \times 10^{-6} \, \text{C/m} \)

Q4. A point charge \( 10 \, \mu\text{C} \) is at the origin. What is the electric field magnitude at a point 5 m along the z-axis?

  • A. \( 3.6 \times 10^3 \, \text{N/C} \)
  • B. \( 4.0 \times 10^3 \, \text{N/C} \)
  • C. \( 4.5 \times 10^3 \, \text{N/C} \)
  • D. \( 5.0 \times 10^3 \, \text{N/C} \)

Q5. A glass rod is rubbed with silk and acquires a charge of \( +2.5 \times 10^{-7} \, \text{C} \). How many electrons were transferred from the glass rod to the silk?

  • A. \( 1.25 \times 10^{12} \)
  • B. \( 1.56 \times 10^{12} \)
  • C. \( 1.80 \times 10^{12} \)
  • D. \( 2.00 \times 10^{12} \)

+ 5 more questions in the actual test

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