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MERITROOT FREE LEARNING · CLASS 12 / PHYSICS

Current Electricity

Your chapter workspace for understanding concepts, revising key ideas and practising questions. Choose an available resource below.

PYQs2Formulae2Derivations1Notes2
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PYQs

Practise questions grouped by chapter and source year.

Practice questions are organised using the years and labels in our source collection. Work through the solutions with your teacher; these are not a complete official examination paper.

Practice question 1

Source year: 20255 marks

State and derive the condition for balance in a Wheatstone bridge. [CBSE 2025]

Practice question 2

Source year: 20243 marks

Calculate the equivalent resistance of three resistors 2Ω, 3Ω, 6Ω in parallel. [CBSE 2024]

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Formulae

Revisit important relationships and quick revision formulae.

Ohm's Law

V = IR

Power

P = I²R = V²/R

∑

Derivations

Work through the reasoning behind key concepts.

Wheatstone Bridge

Derive R₁/R₂ = R₃/R₄ using Kirchhoff's laws.

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Notes

Build understanding with chapter guides and revision notes.

Understand the chapter

This is a chapter-wise rendering test file. It is not a full textbook chapter. It contains representative formulae, equations, diagrams, mechanisms, tables, and notation patterns useful for testing digitised CBSE/NCERT-style content.

Metadata

FieldValue
Class12
SubjectPhysics
Chapter3. Current Electricity
Test typeMarkdown + LaTeX + Mermaid

Key rendering targets

  • Inline formulae like E=mc2E=mc^2
  • Block formulae using $$
  • Tables
  • Diagrams using Mermaid
  • Searchable plain text
  • Future conversion to HTML, JSON, database, and app content

Electrostatics rendering

F⃗=14πε0q1q2r2r^\vec{F}=\frac{1}{4\pi\varepsilon_0}\frac{q_1q_2}{r^2}\hat{r} E⃗=14πε0qr2r^\vec{E}=\frac{1}{4\pi\varepsilon_0}\frac{q}{r^2}\hat{r} U=12CV2=Q22C=12QVU=\frac12CV^2=\frac{Q^2}{2C}=\frac12QV

Practice/testing prompts

  1. Check if all formulae render correctly.
  2. Check if the diagram appears in Obsidian or HTML.
  3. Mark this chapter as pass, needs-plugin, or needs-SVG.

Status

  • Formulae checked
  • Diagram checked
  • HTML checked
  • Mobile view checked

Comprehensive Notes: Current Electricity

Introduction to Current Electricity

These are the fundamental concepts and key takeaways for this chapter. Make sure to review these before exams.

  • Key Concept 1
  • Key Concept 2
  • Important Definition

More detailed notes will be added here soon.

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