NEET Physics: Electric Charges and Fields — MCQ Test 20

Q6. A plane sheet has a surface charge density \( \sigma = 1.77 \times 10^{-10} \, \text{C/m}^2 \). What is the electric field near it?

Q7. A closed surface has a net flux of \( 9.04 \times 10^5 \, \text{Nm}^2/\text{C} \). What is the charge enclosed?

Q8. Why does the electric field remain constant inside a region where field lines are uniformly spaced and parallel?

Q9. Three charges \( +2 \, \mu\text{C} \) each are at the vertices of an equilateral triangle of side 2 m. What is the force on one charge?

Q10. A uniform electric field \( E = 8 \times 10^3 \, \text{N/C} \) is along the x-axis. What is the flux through a rectangle of 20 cm × 30 cm in the yz-plane?

NEET Physics — Electric Charges and Fields

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Two charges \( +15 \, \mu\text{C} \) and \( -5 \, \mu\text{C} \) are 75 cm apart. What is the distance from \( +15 \, \mu\text{C} \) where the electric field is zero?

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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 Distance, Electric, Spherical, Stronger, Conductor, and Compared.

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. Two charges \( +15 \, \mu\text{C} \) and \( -5 \, \mu\text{C} \) are 75 cm apart. What is the distance from \( +15 \, \mu\text{C} \) where the electric field is zero?

  • A. 45 cm
  • B. 46 cm
  • C. 47 cm
  • D. 47.5 cm

Q2. A thin spherical shell of radius 10 cm has a charge of \( 8 \, \mu\text{C} \). What is the electric field at a point 5 cm from the center?

  • A. \( 0 \, \text{N/C} \)
  • B. \( 1.44 \times 10^6 \, \text{N/C} \)
  • C. \( 2.88 \times 10^6 \, \text{N/C} \)
  • D. \( 7.2 \times 10^6 \, \text{N/C} \)

Q3. What causes the electric field to be stronger near a sharp point on a charged conductor compared to a flat surface?

  • A. Charge concentration
  • B. Field symmetry
  • C. Charge quantization
  • D. Field cancellation

Q4. An infinite line charge has \( \lambda = 1.5 \times 10^{-6} \, \text{C/m} \). What is the electric field at 50 cm?

  • A. \( 5.0 \times 10^4 \, \text{N/C} \)
  • B. \( 5.4 \times 10^4 \, \text{N/C} \)
  • C. \( 5.6 \times 10^4 \, \text{N/C} \)
  • D. \( 6.0 \times 10^4 \, \text{N/C} \)

Q5. What causes electric field lines to emerge perpendicularly from the surface of a charged conductor?

  • A. Charge density
  • B. Equilibrium condition
  • C. Field symmetry
  • D. Charge quantization

+ 5 more questions in the actual test

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