NEET Physics: Electric Charges and Fields — MCQ Test 18

Q6. A thin spherical shell of radius 15 cm has \( q = 6 \, \mu\text{C} \). What is the electric field at 10 cm from the center?

Q7. What ensures that electric field lines never cross each other in a static field configuration?

Q8. What ensures that the electric field inside a hollow conductor remains zero even if an external charge is placed nearby?

Q9. A dipole with \( p = 9 \times 10^{-9} \, \text{C m} \) is at 90° to a field \( E = 3 \times 10^4 \, \text{N/C} \). What is the torque?

Q10. What explains why the electric field due to a charged object can penetrate an insulator but not a conductor?

NEET Physics — Electric Charges and Fields

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A thin spherical shell of radius 12 cm has \( q = 10 \, \mu\text{C} \). What is the electric field at 14 cm from the center?

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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 Spherical, Electric, Enclosed, Conducting, Magnitude, and Electrostatic.

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 thin spherical shell of radius 12 cm has \( q = 10 \, \mu\text{C} \). What is the electric field at 14 cm from the center?

  • A. \( 4.2 \times 10^6 \, \text{N/C} \)
  • B. \( 4.4 \times 10^6 \, \text{N/C} \)
  • C. \( 4.5 \times 10^6 \, \text{N/C} \)
  • D. \( 4.59 \times 10^6 \, \text{N/C} \)

Q2. A closed surface has a net flux of \( 7.91 \times 10^5 \, \text{Nm}^2/\text{C} \). What is the charge enclosed?

  • A. \( 6.8 \, \mu\text{C} \)
  • B. \( 6.9 \, \mu\text{C} \)
  • C. \( 7.0 \, \mu\text{C} \)
  • D. \( 7.1 \, \mu\text{C} \)

Q3. A conducting sphere of radius 30 cm has a surface charge density of \( 50 \, \mu\text{C/m}^2 \). What is the total charge on it?

  • A. \( 4.5 \times 10^{-5} \, \text{C} \)
  • B. \( 5.0 \times 10^{-5} \, \text{C} \)
  • C. \( 5.65 \times 10^{-5} \, \text{C} \)
  • D. \( 6.0 \times 10^{-5} \, \text{C} \)

Q4. Two point charges \( q_1 = 4 \, \mu\text{C} \) and \( q_2 = -6 \, \mu\text{C} \) are placed 20 cm apart in vacuum. What is the magnitude of the electrostatic force between them?

  • A. 4.5 N
  • B. 5.4 N
  • C. 6.0 N
  • D. 7.2 N

Q5. Two point charges \( 6 \times 10^{-7} \, \text{C} \) and \( 9 \times 10^{-7} \, \text{C} \) are 45 cm apart in air. What is the magnitude of the force between them?

  • A. 0.024 N
  • B. 0.027 N
  • C. 0.030 N
  • D. 0.033 N

+ 5 more questions in the actual test

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