Grades/ Grade 12/ Physics/Unit 3 · Current Electricity
Class XII · Physics · Chapter 3

Current Electricity — three ways to learn it.

Current as flowing charge, Ohm's law V = IR, resistance and resistivity, resistors in series and parallel, EMF and the cell's internal resistance, Kirchhoff's two rules, electrical power P = VI, and the Wheatstone bridge. Read the full lecture, watch electrons flow and meters swing on screen, then run the virtual experiment. Pick any door — they all teach the same chapter.

Choose how you want to learn
Section 1
📖
Lecture & walkthrough
The complete written lesson — current I = Q/t, potential difference and EMF, Ohm's law V = IR, resistance and resistivity (R = ρL/A), resistors in series and parallel, EMF and internal resistance, Kirchhoff's current and voltage laws, electrical power P = VI, and the Wheatstone bridge.
8 sections · ~25 min read
Open the lecture →
Section 2
🎬
Interactive lecture
As you scroll, a live animated panel sends electrons drifting through a wire, swings the ammeter and voltmeter, builds series and parallel networks, and balances a Wheatstone bridge — every law shown as a moving circuit.
Same content · live animation per section
Open the interactive lecture →
Section 3
🧪
Virtual lab
Run the Ohm's-law experiment on a safe, virtual bench: vary the voltage across a resistor, read the current on the ammeter, and plot V against I to confirm the straight-line relation and find the resistance from the slope.
Hands-on · voltage vs current apparatus
Enter the virtual lab →
Test yourself
📝 Practice — board MCQs & solved numericals ← Back to all chapters

One chapter, three doors

Read it, watch the current flow, then check yourself.