Class 12 Physics (India)
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Learn, practice, and master the skills on Khan Academy that are required for your 12th board exams.
Electric charge: Electric charges and fieldConservation of charge: Electric charges and fieldCoulomb's law and electric force: Electric charges and fieldElectric field & field lines: Electric charges and fieldElectric field due to point charges: Electric charges and field
Electric dipoles: Electric charges and fieldTorque on a dipole in external field: Electric charges and fieldContinuous charge distribution: Electric charges and fieldElectric flux and Gauss's law: Electric charges and fieldGauss's law: Electric charges and fieldApplication of Gauss law: Electric charges and field
Electrostatic potential, potential energy, and work done: Electrostatic potential and capacitanceElectric potential conceptual problems: Electrostatic potential and capacitancePotential due to a point charge: Electrostatic potential and capacitancePotential energy of a system of charges: Electrostatic potential and capacitancePotential due to an electric dipole and other systems of charges: Electrostatic potential and capacitanceEquipotential surfaces: Electrostatic potential and capacitance
Relation between field & potential: Electrostatic potential and capacitanceElectrostatics of conductors: Electrostatic potential and capacitanceCapacitance & parallel plate capacitors: Electrostatic potential and capacitanceEffect of dielectric on capacitance: Electrostatic potential and capacitanceCombination of capacitors: Electrostatic potential and capacitanceEnergy stored in a capacitor: Electrostatic potential and capacitanceMiscellaneous questions on Capacitance: Electrostatic potential and capacitance
Drift of electrons & the origin of resistance: Current electricityElectric current and voltage: Current electricityResistivity, and Ohm's law: Current electricityElectric power and DC circuits: Current electricityCell, EMF, terminal voltage, & internal resistance: Current electricityCombination of cells: Current electricity
Magnets and magnetic fields: Moving charges and magnetismOersted's experiment and right hand rule: Moving charges and magnetismLorentz force & definition of magnetic field: Moving charges and magnetismMagnetic force on a current carrying conductor: Moving charges and magnetismMotion in magnetic field: Moving charges and magnetismMotion in combined magnetic and electric fields: Moving charges and magnetismBiot - Savart law: Magnetic field due to a current element: Moving charges and magnetism
Magnetic field on the axis of circular current loop: Moving charges and magnetismAmpere's circuital law: Moving charges and magnetismForce between two parallel currents: Moving charges and magnetismSolenoid & torroid: Moving charges and magnetismCurrent loops as magnetic dipoles: Moving charges and magnetismTorque on magnetic dipoles: Moving charges and magnetismMoving coil galvanometer: Moving charges and magnetismConverting galvanometer into ammeter/voltmeter: Moving charges and magnetism
Electromagnetic induction - intro: Electromagnetic inductionMagnetic flux: Electromagnetic inductionFaraday's laws of induction: Electromagnetic inductionLenz's law: Electromagnetic induction
AC voltage applied to resistor, capacitor, & inductor: Alternating currentInductive and capacitive reactances: Alternating currentRMS values of current & voltage: Alternating currentPhasor diagrams: Alternating current
Reflection and plane mirrors: Ray optics and optical instrumentsReflection of light by spherical mirrors: Ray optics and optical instrumentsRefraction at plane surfaces: Ray optics and optical instrumentsRefraction in prisms: Ray optics and optical instruments
Huygen's principle: Wave opticsHuygen's principles & proof of laws of reflection/refraction: Wave opticsCondition for construction & destruction of coherent waves: Wave opticsYoung's double slit experiment: Wave optics
Photoelectric effect and wave theory of light: Dual nature of radiation and matterThe Photon Picture: Dual nature of radiation and matterEinstein's Photoelectric Equation: Dual nature of radiation and matter
Band theory of solids: SemiconductorsBasics of semiconductors: SemiconductorsThe PN junction: SemiconductorsPN junction biasing: SemiconductorsRectifiers: Semiconductors