NEET Physics: Electric Charges and Fields — MCQ Test 5

Q6. What ensures that the electric field outside a neutral conductor in an external field is altered by induced charges?

Q7. A plastic rod gains a charge of \( -1.92 \times 10^{-7} \, \text{C} \) when rubbed. How many electrons were transferred to it?

Q8. Two point charges \( 4 \times 10^{-7} \, \text{C} \) and \( -8 \times 10^{-7} \, \text{C} \) are 90 cm apart in vacuum. What is the magnitude of the force between them?

Q9. Two charges \( +4 \, \mu\text{C} \) and \( -6 \, \mu\text{C} \) are 30 cm apart. What is the electric field at a point 15 cm from \( +4 \, \mu\text{C} \) along the line joining them?

Q10. A closed surface has a net flux of \( 4.52 \times 10^5 \, \text{Nm}^2/\text{C} \). What is the charge enclosed?

Q11. Three charges \( +4 \, \mu\text{C}, -2 \, \mu\text{C}, +5 \, \mu\text{C} \) are at the vertices of an equilateral triangle of side 1.2 m. What is the force magnitude on \( +4 \, \mu\text{C} \)?

Q12. A closed surface has a net flux of \( 2.26 \times 10^5 \, \text{Nm}^2/\text{C} \). What is the charge enclosed?

Q13. A dipole with \( p = 6 \times 10^{-9} \, \text{C m} \) is at 60° to a field \( E = 3 \times 10^4 \, \text{N/C} \). What is the torque?

Q14. What explains why an electric dipole aligns with an external field when free to rotate?

Q15. Two point charges \( 8 \times 10^{-7} \, \text{C} \) and \( -4 \times 10^{-7} \, \text{C} \) are 60 cm apart in vacuum. What is the magnitude of the force between them?

NEET Physics — Electric Charges and Fields

Free MCQ Test 5 of 22

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A charge \( 6 \, \mu\text{C} \) is at the center of a cube of edge 20 cm. What is the total electric flux through the cube?

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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 15 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 Electric, Separated, Property, Responsible, Conductor, and Equilibrium.

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 charge \( 6 \, \mu\text{C} \) is at the center of a cube of edge 20 cm. What is the total electric flux through the cube?

  • A. \( 6.0 \times 10^5 \, \text{Nm}^2/\text{C} \)
  • B. \( 6.78 \times 10^5 \, \text{Nm}^2/\text{C} \)
  • C. \( 7.5 \times 10^5 \, \text{Nm}^2/\text{C} \)
  • D. \( 8.0 \times 10^5 \, \text{Nm}^2/\text{C} \)

Q2. A dipole has charges \( +q = 3 \, \mu\text{C} \) and \( -q = -3 \, \mu\text{C} \) separated by 2 mm. What is the dipole moment?

  • A. \( 3 \times 10^{-9} \, \text{C m} \)
  • B. \( 6 \times 10^{-9} \, \text{C m} \)
  • C. \( 9 \times 10^{-9} \, \text{C m} \)
  • D. \( 1.2 \times 10^{-8} \, \text{C m} \)

Q3. Which property of electric charges is responsible for the fact that charges on a conductor in equilibrium reside only on its surface?

  • A. Mobility
  • B. Quantization
  • C. Additivity
  • D. Symmetry

Q4. Why does the torque on an electric dipole in a uniform field depend on the sine of the angle between the dipole and the field?

  • A. Charge symmetry
  • B. Field uniformity
  • C. Charge separation
  • D. Perpendicular component

Q5. Why does the electric field due to an infinite charged sheet remain constant regardless of its thickness?

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

+ 10 more questions in the actual test

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