NEET Physics: Electric Charges and Fields — MCQ Test 22

Q6. What ensures that the electric field due to a uniformly charged infinite wire decreases as \( 1/r \) instead of \( 1/r^2 \)?

Q7. An infinite line charge has \( E = 7.2 \times 10^5 \, \text{N/C} \) at 5 cm. What is \( \lambda \)?

Q8. A plane sheet has \( \sigma = 1.062 \times 10^{-10} \, \text{C/m}^2 \). What is the electric field near it?

Q9. A conducting sphere of radius 21 cm has an electric field of \( 8 \times 10^3 \, \text{N/C} \) at 42 cm from its center. What is the charge?

Q10. Why can’t electric field lines form closed loops in electrostatics, unlike magnetic field lines?

NEET Physics — Electric Charges and Fields

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A charge of \( 17 \, \mu\text{C} \) is at the center of a cube of edge 55 cm. What is the flux through one face?

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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 Explains, Electric, Conducting, Position, Spherical, and Property.

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 charge of \( 17 \, \mu\text{C} \) is at the center of a cube of edge 55 cm. What is the flux through one face?

  • A. \( 3.0 \times 10^5 \, \text{Nm}^2/\text{C} \)
  • B. \( 3.2 \times 10^5 \, \text{Nm}^2/\text{C} \)
  • C. \( 3.3 \times 10^5 \, \text{Nm}^2/\text{C} \)
  • D. \( 3.4 \times 10^5 \, \text{Nm}^2/\text{C} \)

Q2. What explains why the electric field inside a charged non-conducting sphere is non-zero and varies with position?

  • A. Charge quantization
  • B. Field symmetry
  • C. Volume charge distribution
  • D. Charge mobility

Q3. A thin spherical shell of radius 7 cm has \( q = 3 \, \mu\text{C} \). What is the electric field at 4 cm from the center?

  • A. \( 1.5 \times 10^6 \, \text{N/C} \)
  • B. \( 1.0 \times 10^6 \, \text{N/C} \)
  • C. \( 0 \, \text{N/C} \)
  • D. \( 0.5 \times 10^6 \, \text{N/C} \)

Q4. Which property of electric charge explains why the total charge of an isolated system remains constant even when objects within it are rubbed together?

  • A. Conservation
  • B. Quantization
  • C. Additivity
  • D. Polarity

Q5. What allows an electric dipole to experience a net force in a non-uniform electric field but not in a uniform one?

  • A. Charge symmetry
  • B. Field gradient
  • C. Charge quantization
  • D. Field uniformity

+ 5 more questions in the actual test

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