Current Electricity · Class 12 Physics · Chapter 3
🔌 Current Electricity
CBSE Class 12 Science · Physics · Chapter 1
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📖Notes Deck
Full lecture deck with teaching paragraphs, misconception red-boxes, and glossary. Read this first.
Download PDF →📝Quick Drill
15 pattern-tagged MCQs with per-Q time budget. Drill under a 20-min timer.
Download PDF →📄Exam Paper
Full exam-pattern paper with sections. Sit it closed-book before checking the marking scheme.
Download PDF →✅Marking Scheme + Topper Templates
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Download PDF →⚡Cheat Sheet
1-page exam-day card: key points, top question patterns, 90-minute revision flow.
Download PDF →👨👩👧For Parents
1-page plain-language parent guide: what's being learned + questions to ask your child.
Download PDF →Top question patterns · CBSE annual / SQP aggregate
| 90% | Drift velocity derivation + I = neAv_d — F=eE, a=eE/m, v_d = a*tau | 3 MARKS |
| 85% | Wheatstone bridge balance condition — Ig=0 then KVL gives P/Q = R/S | 3 MARKS |
| 80% | Equivalent EMF and r — series/parallel cells — Series adds; parallel reciprocal-add of r and weighted-add of epsilon/r | 3 MARKS |
| 75% | Terminal voltage / internal resistance numerical — V=epsilon-Ir; two data points solve r and epsilon | 2 MARKS |
| 70% | Potentiometer vs voltmeter for EMF — Null method => I=0 => V_terminal = epsilon (true EMF) | 3 MARKS |
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