CBSE 12 Physics · U1
Electrostatics
CBSE Class 12 Physics Unit I: electric charge, Coulomb's law, electric field and dipoles, electric flux and Gauss's law, potential and equipotential surfaces, conductors, dielectrics, capacitance, capacitor combinations, and stored energy.
Test yourself
A focused, distraction-free run through 31 multiple-choice questions. Hints if you need them; your score at the end.
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Topic 1.1
Electric Charge, Charge Conservation and Coulomb's Law
Law of charges, charge quantisation, conservation, inverse-square force, and superposition of forces
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Topic 1.2
Electric Field and Electric Dipole
Field due to point charges, field-line reasoning, dipole field, torque, and energy
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Topic 1.3
Electric Flux and Gauss's Law
Flux, closed surfaces, symmetry arguments, and fields due to standard charge distributions
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Topic 1.4
Electric Potential and Equipotential Surfaces
Potential, potential difference, work, energy of charge systems, conductors, and equipotentials
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Topic 1.5
Capacitance, Dielectrics, and Energy
Conductors, dielectric effects, capacitor combinations, charge sharing, and stored energy
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