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Punjab Board Class 12 Physics — Formula Sheet

Punjab Board Class 12 Physics formula sheet, chapter by chapter — 36 formulas across 5 chapters. Follows the PSEB syllabus.

How to Use the Formula Sheet

  1. Write, don't just read — writing each formula out helps it stick.
  2. Understand the derivation — you can rebuild a formula you half-remember.
  3. Group related formulas — link the ones that build on each other.
  4. Test yourself — cover the sheet and write the formulas from memory.

Chapter-Wise Formulas — 5 Chapters

1

Electric Charges and Fields

2 entries
The SI unit of charge is coulomb (C). It is a derived unit: 1 C = 1 A·s.
QUANTISATION: Electric charge always comes in integer multiples of the basic unit e = 1.6 × 10⁻¹⁹ C. You cannot have half an electron's charge.
The full Electric Charges and Fields formula sheet
2

Electrostatic Potential and Capacitance

9 entries
Potential Energy Difference: ΔU = U_P − U_R = W_RP (work done by external force in moving charge q from R to P).
The reference point for potential energy is taken at infinity where potential energy = 0.
Potential due to a point charge Q at distance r: V = kQ/r = Q/(4πε₀r). This falls as 1/r.
No work is done in moving a charge along an equipotential surface (since ΔV = 0, W = qΔV = 0).
For two charges: U = kq₁q₂/r₁₂. Positive U means repulsive (like charges); Negative U means attractive (unlike charges).
The full Electrostatic Potential and Capacitance formula sheet
3

Current Electricity

8 entries
For steady current: I = q/t, where q is the net charge flowing in time t.
For non-steady (instantaneous) current: I(t) = lim(ΔQ/Δt) as Δt → 0, which is the derivative dQ/dt.
Ohm's Law: V ∝ I, or V = IR, where R is the resistance of the conductor.
Resistance R depends on the material and dimensions of the conductor: R = ρl/A.
For metals, resistivity increases with temperature: ρ_T = ρ₀[1 + α(T - T₀)]
The full Current Electricity formula sheet

2 more chapters below

Formula sheets for all 5 chapters with formulas.

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Frequently Asked Questions

Where can I find Punjab Board Class 12 Physics Formula Sheet?

This page has formula sheet for 5 chapters of Punjab Board Class 12 Physics for the board exams 2027. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Learn the formulas you use most first, and understand what each symbol means so you can apply them. Knowing where a formula comes from helps you rebuild it if you forget it in the exam.

Browse Formula Sheet by Chapter

5 chapters

1

Electric Charges and Fields

2

Electrostatic Potential and Capacitance

3

Current Electricity

4

Moving Charges and Magnetism

5

Magnetism and Matter

More Physics Resources

Punjab Board Class 12

Practice Quiz

Test yourself with quick quizzes

Important Questions

Exam-style questions with answers

Revision Notes

Key concepts and quick revision points

Chapter Summary

Understand each chapter at a glance

Concept Maps

Diagrams showing how topics connect

Flashcards

Quick-fire cards for active recall practice

Syllabus

Chapter list and the topics in each

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