NEET Physics: Electric Charges and Fields — MCQ Test 11

Q6. A point charge \( -10 \, \mu\text{C} \) is at the origin. What is the electric field magnitude at a point 10 m along the x-axis?

Q7. A thin spherical shell of radius 13 cm has a charge of \( 9 \, \mu\text{C} \). What is the electric field at a point 18 cm from the center?

Q8. Why does the electric field outside a charged conducting sphere resemble that of a point charge located at its center?

Q9. A conducting sphere of radius 22 cm has a surface charge density of \( 40 \, \mu\text{C/m}^2 \). What is the electric field just outside its surface?

Q10. A dipole with \( p = 8 \times 10^{-9} \, \text{C m} \) is at 30° to a field \( E = 5 \times 10^4 \, \text{N/C} \). What is the torque magnitude?

NEET Physics — Electric Charges and Fields

Free MCQ Test 11 of 22

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A conducting sphere of radius 26 cm has a surface charge density of \( 45 \, \mu\text{C/m}^2 \). What is the electric field just outside its surface?

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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, External, Infinite, Distance, and Magnitude.

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 26 cm has a surface charge density of \( 45 \, \mu\text{C/m}^2 \). What is the electric field just outside its surface?

  • A. \( 4.8 \times 10^6 \, \text{N/C} \)
  • B. \( 5.0 \times 10^6 \, \text{N/C} \)
  • C. \( 5.08 \times 10^6 \, \text{N/C} \)
  • D. \( 5.2 \times 10^6 \, \text{N/C} \)

Q2. A plane sheet has \( \sigma = 1.77 \times 10^{-11} \, \text{C/m}^2 \). What is the electric field near it?

  • A. \( 0.8 \, \text{N/C} \)
  • B. \( 1.0 \, \text{N/C} \)
  • C. \( 1.2 \, \text{N/C} \)
  • D. \( 1.5 \, \text{N/C} \)

Q3. Why does the electric field inside a charged conducting shell remain zero even when an external field is applied?

  • A. Charge quantization
  • B. Field symmetry
  • C. Electrostatic shielding
  • D. Charge density

Q4. An infinite line charge has a linear charge density of \( 4 \times 10^{-6} \, \text{C/m} \). What is the electric field at a distance of 8 cm?

  • A. \( 8.0 \times 10^5 \, \text{N/C} \)
  • B. \( 9.0 \times 10^5 \, \text{N/C} \)
  • C. \( 1.0 \times 10^6 \, \text{N/C} \)
  • D. \( 1.2 \times 10^6 \, \text{N/C} \)

Q5. An infinite line charge has \( E = 4.5 \times 10^5 \, \text{N/C} \) at 8 cm. What is \( \lambda \)?

  • A. \( 1.8 \times 10^{-6} \, \text{C/m} \)
  • B. \( 1.9 \times 10^{-6} \, \text{C/m} \)
  • C. \( 1.95 \times 10^{-6} \, \text{C/m} \)
  • D. \( 2.0 \times 10^{-6} \, \text{C/m} \)

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