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Subjects

Physics

Electrical Energy and Power

विद्युत ऊर्जा और शक्ति

Electrical Energy and Power is a Class 12 Physics topic within Chapter 3, Current Electricity. It explains how electric charge transfers energy through a circuit and how quickly that energy is delivered or converted, introducing the relations P = VI, P = I²R, and P = V²/R. Students connect voltage, current, and resistance with power dissipation in resistors, calculate electrical work and energy, and interpret units such as watt, joule, and kilowatt-hour. The topic also supports practical understanding of electricity use in circuits and appliances.

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