Important topics for Karnataka State Board (2nd PUC/Class 12) Physics, specifically focusing on Chapters 1–4 for the 2025–26 academic year, based on the updated syllabus and weightage.

 

Chapter-Wise Marks Weightage (Theory Paper: 70 Marks)

According to the Karnataka 2nd PUC Physics blueprint for 2025, the marks distribution for the first four chapters is as follows:

• Chapter 1: Electric Charges & Fields — 11 marks

• Chapter 2: Electrostatic Potential & Capacitance — 10 marks

• Chapter 3: Current Electricity — 13 marks

• Chapter 4: Moving Charges & Magnetism — 11 marks
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These chapters collectively account for 45 marks, making them vital for exam preparation.

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Important Topics per Chapter

Here’s what to focus on in each chapter for better performance:

Chapter 1: Electric Charges & Fields

• Electric charge fundamentals: conductors vs insulators, charging by induction, Coulomb’s law

• Electric field: field lines, flux, electric dipole concepts, continuous charge distributions

• Gauss’s Law with applications—especially for an infinitely long charged wire
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Chapter 2: Electrostatic Potential & Capacitance

• Electrostatic potential and potential due to point charges, dipoles, and systems of charges

• Equipotential surfaces and potential energy in electrostatic fields

• Dielectrics: polarization effects on capacitance

• Capacitors: parallel-plate capacitor, combinations, energy stored
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Chapter 3: Current Electricity

• Electric current and Ohm’s law, drift of electrons, resistivity and its temperature dependence

• Concepts like emf, internal resistance, cells in series/parallel, Kirchhoff’s rules

• Practical circuits: Wheatstone bridge, meter bridge, and potentiometer
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Chapter 4: Moving Charges & Magnetism

• Magnetic force on moving charges and currents, motion in magnetic and combined electric and magnetic fields (including velocity selector)

• Biot–Savart Law, magnetic field due to current elements, magnetic field on the axis of current loops

• Ampere’s circuital law, fields in solenoids and toroids, and forces between parallel currents

• Moving coil galvanometer fundamentals
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Summary Table

Chapter No.	Title	Key Topics Summary	Marks
1	Electric Charges & Fields	Coulomb’s law, Gauss’s Law, dipoles, electric flux/field concepts	11
2	Electrostatic Potential & Capacitance	Potential, energy, dielectrics, capacitor combinations, energy storage	10
3	Current Electricity	Ohm’s Law, circuit analysis, bridges, potentiometer, emf	13
4	Moving Charges & Magnetism	Magnetic force, Biot–Savart, Ampere’s law, galvanometers	11

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Preparation Tips

1. Conceptual Clarity: Understand fundamentals like Gauss’s law and Kirchhoff’s rules through diagrams and simulations.

2. Diagrams Are Key: Practice clear, labeled diagrams—field lines, circuit blocks, magnetic fields around loops, and galvanometers.

3. Problem Practice: Focus on numerical problems and circuit analysis questions from past papers and model question banks.

4. Blueprint-Based Revision: Use the chapter-wise marks allocation to prioritize your revision: Chapters 1–4 should be high priority given their combined weightage.

5. Regular Revision & Sample Papers: Reinforce your learning with sample papers and question banks that follow the syllabus closely (e.g., KSEEB Solutions, PUC Notes)