Chapter 9 of 16
Syllabus
Current Electricity — Syllabus
Maharashtra Board · Class 12 · Physics
What Current Electricity covers in Maharashtra Board Class 12 Physics: 4 topics, for the 2026-27 session. Topics include Kirchhoff's Laws, Wheatstone.
45 questions25 flashcards5 concepts
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4 Topics · Maharashtra Board Class 12 Physics · 2026-27
Topics in Current Electricity
1
Kirchhoff's Laws
- Junction (Node): Point where two or more conductors meet
- Loop (Mesh): Any closed conducting path in a circuit
- Branch: Part of circuit between two junctions
2
Wheatstone Bridge
- Four resistors P, Q, R, S arranged in quadrilateral form
- Battery connected across one diagonal (AC)
- Galvanometer connected across other diagonal (BD)
3
Potentiometer
- Consists of long uniform wire with constant current
- Potential gradient K = V/L (constant along wire)
- Acts as ideal voltmeter (draws no current at balance)
4
Galvanometer and Its Conversions
- Detects small currents (typically μA to mA range)
- Has moderate resistance (~100Ω) and limited current capacity
- Conversion to ammeter: Add low resistance shunt in parallel
Key Concepts
Two fundamental laws for circuit analysisA fourPractical form of Wheatstone bridge usingBased on the principle that potentialConversion to Ammeter
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What are the important topics in Current Electricity for Maharashtra Board Class 12 Physics?
Key topics in Current Electricity include Kirchhoff's Laws, Wheatstone Bridge, Potentiometer, Galvanometer and Its Conversions. Study these first, then practise questions on each for the Maharashtra Board Class 12 board exam.
How should I revise Current Electricity for the Maharashtra Board Class 12 board exam?
Learn the core ideas first, then work through the 45 practice questions on Current Electricity. Revise definitions regularly and use flashcards for quick recall before the exam.
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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