Class 12 Physics Important Derivations
Ch-01 Electric Charges and Fields
Application of Gauss’s theorem
Electric Field due to dipole
Electric field in Uniform External Field – Torque Stable
Ch-02 Electric Potential and Capacitance
Electric Potential due to Electric dipole.
Potential Energy of System of two point charges in external field
Effect of dielectric on capacitance
The parallel plate capacitor
Ch-03 Current Electricity
Drift Velocity and Deduction of Ohm’s Law from drift velocity
Combinations of cell
Ch-04 Moving Charges and Magnetism
Magnetic field due to current carrying circular loop on its axis
Magnetic field due to infinitely long straight wire
Force between two parallel current carrying conductors
Torque experienced by a current loop in Uniform Magnetic Field
Ch-05 Magnetism and Matter
No derivation
Ch-06 Electromagnetic Induction
Inductance, Energy stored in an Inducter
Self inductance & mutual inductance
Ch-07 Alternating Current
Series LCR circuit (resonance)
Power in an AC circuit
Ch-08 Electromagnetic Waves
No Derivation
Ch-09 Ray Optics
Mirror Formula
Refraction at spherical surfaces
Lens Maker’s formula
Combination of thin lenses in contact {Power derivation}
Refraction through Prism
Optical Instruments.
Ch-10 Wave Optics
Proof of laws of Refraction & Reflection using Huygens’s Law
Interference YDSE ( Only Formula)
Ch-11 Dual Nature of Radiation and Matter
Einstein’s Photoelectric equation
CH-12 ATOMS
Bohr’s Model of Hydrogen atom
Ch-13 Nuclei
No Derivation
Ch-14 Semiconductor
Conductivity of Semiconductor