NEET Physics: Electric Charges and Fields — MCQ Test 14

Q6. Why does the electric field due to a dipole exhibit a stronger angular dependence compared to a single point charge?

Q7. A uniform electric field \( E = 2 \times 10^4 \, \text{N/C} \) is along the x-axis. What is the flux through a square of side 20 cm in the yz-plane?

Q8. A body acquires a charge of \( -9.6 \times 10^{-8} \, \text{C} \) when rubbed. How many electrons were transferred to it?

Q9. A conducting sphere of radius 15 cm has an electric field of \( 4 \times 10^3 \, \text{N/C} \) at 30 cm from its center. What is the charge?

Q10. A uniform field \( E = 5 \times 10^3 \, \text{N/C} \) is along the x-axis. What is the flux through a circle of radius 20 cm in the yz-plane?

NEET Physics — Electric Charges and Fields

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Three charges \( +4 \, \mu\text{C}, -4 \, \mu\text{C}, +2 \, \mu\text{C} \) are at the vertices of an equilateral triangle of side 1 m. What is the force magnitude on \( +4 \, \mu\text{C} \)?

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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 Vertices, Equilateral, Triangle, Magnitude, Infinite, and Produces.

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. Three charges \( +4 \, \mu\text{C}, -4 \, \mu\text{C}, +2 \, \mu\text{C} \) are at the vertices of an equilateral triangle of side 1 m. What is the force magnitude on \( +4 \, \mu\text{C} \)?

  • A. 0.15 N
  • B. 0.17 N
  • C. 0.187 N
  • D. 0.20 N

Q2. An infinite line charge produces an electric field of \( 1.8 \times 10^5 \, \text{N/C} \) at 3 cm. What is its linear charge density?

  • A. \( 2.5 \times 10^{-7} \, \text{C/m} \)
  • B. \( 3.0 \times 10^{-7} \, \text{C/m} \)
  • C. \( 3.5 \times 10^{-7} \, \text{C/m} \)
  • D. \( 4.0 \times 10^{-7} \, \text{C/m} \)

Q3. A conducting sphere of radius 18 cm has a surface charge density of \( 25 \, \mu\text{C/m}^2 \). What is the electric field just outside its surface?

  • A. \( 2.5 \times 10^6 \, \text{N/C} \)
  • B. \( 2.7 \times 10^6 \, \text{N/C} \)
  • C. \( 2.82 \times 10^6 \, \text{N/C} \)
  • D. \( 3.0 \times 10^6 \, \text{N/C} \)

Q4. Why does the electric field due to a charged conducting sphere remain constant just outside its surface regardless of its radius?

  • A. Charge quantization
  • B. Field symmetry
  • C. Surface charge density
  • D. Charge mobility

Q5. What ensures that the electric field lines from a positive point charge always point radially outward?

  • A. Charge quantization
  • B. Repulsion
  • C. Field superposition
  • D. Charge density

+ 5 more questions in the actual test

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