Electricity
Ohm's law, resistance combinations, electric power and energy (NCERT Ch. 11).
3 topics • Notes • Practice • AI explanations available
1. Ohms Law
V = IR, V–I graphs, and ohmic conductors at constant temperature.
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2. Resistance
Series and parallel circuits, R = ρL/A, and resistivity.
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3. Power
P = VI = I²R = V²/R, heating effect, and kWh billing. Simple harmonic motion concepts appear in AC circuits and energy storage.
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