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Physics 12 Physics 12
UNIT II: Current Electricity
- flow of electric charges in a metallic conductor
- mobility and their relation with electric current
- V-I Characteristics (linear and non-linear)
- temperature dependence
- combinations of cells in series and in parallel
UNIT III: Magnetic Effects of Current and Magnetism
- Concept of magnetic field
- Oersted’s experiment
- its applications to infinitely long straight wire
- straight and toroidal solenoids
UNIT IV: Electromagnetic Induction and Alternating Currents
- peak and rms value of alternating current/voltage
- reactance and impedance
- LC oscillations (qualitative treatment only)
UNIT V: Electromagnetic Waves
UNIT VI: Optics
- refraction of light
- total internal reflection
- dispersion of light
- optical instruments
- the human eye
- defects of vision and their correction
- microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers
UNIT VII: Dual Nature of Matter and Radiation
- Hertz and Lenard’s observations
- Einstein’s photoelectric equation-particle nature of light
UNIT VIII: Atoms and Nuclei
- energy levels
- hydrogen spectrum
- Composition and size of the nucleus
- isotopes
- isobars
- isotones
UNIT IX: Electronic Devices
- Zener diode as a voltage regulator
- junction transistor
- transistor action
- Characteristics of a transistor
- transistor as an amplifier (common emitter configuration)
- transistor as a switch
- logic gates (OR, AND, NOT, NAND, and NOR)
- Zener diode as a voltage regulator
BETA
