NEET Physics: Electric Charges and Fields — MCQ Test 17

Q6. A spherical shell has a net flux of \( 1.13 \times 10^5 \, \text{Nm}^2/\text{C} \) through it. What is the charge enclosed?

Q7. A point charge \( q = 5 \, \mu\text{C} \) is placed at the origin. What is the electric field magnitude at a point 2 m away along the x-axis?

Q8. A thin spherical shell of radius 18 cm has \( q = 12 \, \mu\text{C} \). What is the electric field at 22 cm from the center?

Q9. A plastic rod gains a charge of \( -1.28 \times 10^{-7} \, \text{C} \) when rubbed. How many electrons were transferred to it?

Q10. An infinite line charge has \( E = 6.0 \times 10^5 \, \text{N/C} \) at 3 cm. What is \( \lambda \)?

NEET Physics — Electric Charges and Fields

Free MCQ Test 17 of 22

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A conducting sphere of radius 20 cm has an electric field of \( 3 \times 10^3 \, \text{N/C} \) at 40 cm from its center. What is its 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, Rectangle, Characteristic, Conductors, and Distribute.

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 20 cm has an electric field of \( 3 \times 10^3 \, \text{N/C} \) at 40 cm from its center. What is its charge?

  • A. \( 4.0 \times 10^{-8} \, \text{C} \)
  • B. \( 5.33 \times 10^{-8} \, \text{C} \)
  • C. \( 6.0 \times 10^{-8} \, \text{C} \)
  • D. \( 7.2 \times 10^{-8} \, \text{C} \)

Q2. A uniform electric field \( E = 7 \times 10^3 \, \text{N/C} \) is along the x-axis. What is the flux through a rectangle of 25 cm × 40 cm in the yz-plane?

  • A. \( 700 \, \text{Nm}^2/\text{C} \)
  • B. \( 750 \, \text{Nm}^2/\text{C} \)
  • C. \( 800 \, \text{Nm}^2/\text{C} \)
  • D. \( 850 \, \text{Nm}^2/\text{C} \)

Q3. What characteristic of conductors allows charges to distribute uniformly over their surface when placed in an external electric field?

  • A. Mobility of charges
  • B. Insulating property
  • C. Charge quantization
  • D. Fixed charge positions

Q4. Why does the electric field due to a dipole have both radial and tangential components at a general point?

  • A. Charge quantization
  • B. Field symmetry
  • C. Vector addition
  • D. Charge density

Q5. An infinite line charge has \( E = 3.6 \times 10^5 \, \text{N/C} \) at 10 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. \( 2.0 \times 10^{-6} \, \text{C/m} \)

+ 5 more questions in the actual test

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