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Physics 12 Physics 12
UNIT I: Electric Charges and Fields
- Gauss’s theorem and its application to find field due to infinitely long straight wire
UNIT II: Electrostatic Potential and Capacitance
- Electrostatic potential
- potential due to a point charge
- potential due to a dipole
- potential due to a system of charges
- electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field
UNIT III: Current Electricity
- flow of electric charges in a metallic conductor
- V-I characteristics (linear and non-linear)
UNIT IV: Moving Charges and Magnetism
- Magnetic force
- motion in a magnetic field
- magnetic field due to current
- magnetic field due to a straight current carrying conductor
- force on a moving charge in a magnetic field
- magnetic field due to a solenoid
- experienced by a current loop in a magnetic field
- moving coil galvanometer
- the principle and working of a cyclotron
UNIT V: Magnetism and Matter
- magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis
- on a magnetic dipole (bar magnet) in a uniform magnetic field
- Earth’s magnetic field and magnetic elements
UNIT VI: Electromagnetic Induction
UNIT VII: Alternating Current
- AC voltage applied to a resistor
- representation of AC current and voltage by rotating vectors - phasors
- AC voltage applied to an inductor
- AC voltage applied to a capacitor
- LC oscillations
UNIT VIII: Electromagnetic Waves
- electromagnetic spectrum
- elementary facts about Hertz experiment
UNIT IX: Ray Optics and Optical Instruments
- Ray optics and optical instruments
- refraction of light
- optical fibres
- refraction at spherical surfaces
- lenses
- lens formula
- power of a lens
- microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers
UNIT X: Wave Optics
- Wavefront and Huygens’ principle
- reflection and refraction of plane wave at a plane surface using wavefronts
- proof of laws of reflection and refraction using Huygens’ principle
- resolving power of microscopes and astronomical telescopes
- polarisation
- plane polarised light
- uses of plane polarised light and Polaroids
BETA
