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Class 12 Notes

22. Semiconductor Devices

22.1 P–N Junction Formed by joining p-type and n-type semiconductors. At junction: Electrons & holes combine →...

Chapter 21: Protons

21.1 Quantum Nature of Radiation Light has dual nature: wave + particle (photon). Photon energy: Photons explain...

Chapter 20: Electrons

20.1 Millikan’s Oil Drop Experiment Purpose: To measure the charge of an electron (e). Idea: Oil...

Chapter 19: Alternating Currents

19.1 Peak and RMS Value of AC Current and Voltage 19.2 AC Through Resistor, Inductor,...

Chapter 18: Electromagnetic Induction

18.1 Faraday’s Laws; Induced Electric Fields 18.2 Lenz’s Law, Motional emf Lenz’s Law: The direction of...

Chapter 17: Magnetic Properties of Materials

17.1 7.1 Magnetic Field Lines and Magnetic Flux Magnetic field lines: Imaginary curves showing the...

Chapter 16: Magnetic Field

16.1 Magnetic field lines & magnetic flux; Oersted’s experiment 16.2 Force on moving charge; Force...

Chapter 15: Thermoelectric Effect

15.1 Seebeck Effect; Thermocouples Seebeck Effect: When two different metals are joined to form a...