Enhance your preparation for the CBSE Class 12 Physics board exam with this comprehensive quiz on Chapter 1: Electric Charges and Fields. This quiz covers key concepts adhering to the latest NCERT syllabus, including Coulomb's Law, Electric Dipoles, Gauss's Law, and Electric Flux. It features a mix of conceptual Multiple Choice Questions (MCQs) and numerical problem-solving exercises designed to mirror the difficulty and format of actual board questions and Previous Year Questions (PYQs). Perfect for self-assessment, this test helps students identify weak areas in electrostatics and solidify their understanding of fundamental laws governing static charges. Practice these high-probability questions to boost your confidence and score higher in your physics term exams and competitive entrance tests like JEE and NEET.
30
Minutes
20
Questions
1 / -0
Marking
Q1. Which of the following statements is true regarding the quantization of electric charge?
Charge can exist in fractions of electron charge.
The total charge of an isolated system is not conserved.
Charge always exists as an integral multiple of the fundamental charge .
Quantization of charge is only valid for microscopic charges.
Q2. Two point charges and repel each other with a force of . If each is given an additional charge of , the new force will be:
(attractive)
(repulsive)
(repulsive)
(attractive)
Q3. The electric flux through a closed surface enclosing an electric dipole is:
Zero
Infinite
Q4. An electric dipole of dipole moment is placed in a uniform electric field . The torque acting on it is given by:
Q5. Which of the following graphs correctly represents the variation of electric field due to a uniformly charged infinite plane sheet with distance from it?
is independent of
Q6. A charge is placed at the center of a cube of side . The electric flux emerging from the cube is:
Q7. The SI unit of electric flux is:
Q8. If the distance between two point charges is doubled, the electrostatic force between them becomes:
Four times
Two times
One-fourth
Halved
Q9. An electron enters a uniform electric field with an initial velocity perpendicular to the field lines. The trajectory of the electron is:
Straight line
Circular
Parabolic
Elliptical
Q10. Four charges are placed at the corners of a square ABCD. The charge at A is , at B is , at C is , and at D is . The direction of the electric field at the center of the square is along:
AB
CB
BD
AC
Q11. What is the angle between the electric dipole moment and the electric field strength due to it on the equatorial line?
Q12. A hollow metal sphere of radius is uniformly charged. The electric field at a distance () from the center is:
Zero
Non-zero constant
Proportional to
Inversely proportional to
Q13. Two charges and are placed in vacuum at a distance and the force acting between them is . If a medium of dielectric constant is introduced around them, the force will be:
Q14. The electric field intensity due to a short dipole at a distance along the axial line is and along the equatorial line is . The relation between them is:
Q15. A point charge is at a distance 5 cm directly above the center of a square of side 10 cm. The magnitude of the electric flux through the square is:
Zero
...and 5 more challenging questions available in the interactive simulator.