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arihant, CBSE, New Pattern, Physics, Class 12 (Term I), - Multiple Choice Questions, - Assertion-Reasoning MCQS, - Case Based MCQS, 3 Practice Papers, On Latest Term I Syllabus, Including Chapterwise, Quick Revision Notes, As per CBSE Circular Acad - 51/2021,, 05 July 2021 & Acad - 53/2021, 22 July 2021., Scanned with CamScanner, 1
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Contents, Chapter 01, Electric Charges and Fields, 1-25, Chapter 02, Electrostatic Potential and Capacitance, 26-49, Chapter 03, Current Electricity, 50-70, Chapter 04, Moving Charges and Magnetism, 71-90, Chapter 05, Magnetism and Matter, 91-100, Chapter 06, Electromagnetic Induction, egram@Clas12marrial, 101-117, Chapter 07, Alternating Current, 118-134, Practice Papers (1-3), 135-150, CBSE, NewPa, Scanned with CamScanner, 3
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Alternating currents, peak and RMS value of alternating current/voltage;, Electromagnetic induction; Faraday's laws, induced EMF and current; Lenz's Law,, 19 Periods, Chapter-6 Electromagnetic Induction, Eddy currents. Self and mutual induction., Chapter-7 Alternating Current, reactance and impedance; LC oscillations (qualitative treatment only), LCR corics, circuit, resonance; power in AC circuits. AC generator and transformer., Deleted Topics, Unit/Chapter & Syllabus Reduced, Unit I Electrostatics, Chapter 1: Electric Charges and Fields, • uniformly charged thin spherical shell, and outside)., Unit II Current Electricity, Chapter 3: Current Electricity, • Carbon resistors, colour code for carbon resistors; series and, parallel combinations of, Unit III Magnetic Effects of Current and Magnetism, Chapter 4: Moving, • Cyclotron., and Magnetism, Chapter 5: Magnetism and Matter, • magnetic field intensity due to a magnetic dipole (bar magnet) along its axis an, perpendicular to its axis, torque on a magnetic dipole (bar magnet) in a uniform, magnetic field Para-, dia- and ferro - magnetic substances with examples., Electromagnets and factors affecting their strengths, permanent magnets., Unit IV Electromagnetic Induction and Alternating Currents, Chapter 7: Alternating Current, • power factor, wattless current., CBSE, New Pattern, Scanned with CamScanner, 4, elerot 12majal
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01, Electric Charges, and Fields, Quick Revision, 1. Charge is the property associated with matter, due to which it produces/experiences electric, and magnetic effects. There are two types of, charges namely positive charge and negative, charge., Charge is a scalar quantity, it can be added and, subtracted as a number. Its SI unit is coulomb, and its dimensional formula is [M° L° T A]., 2. Conservation of Electric Charge Duringa, process, the net electric charge of an isolated, system remains constant, i.e. conserved. In, simple words, charge can neither be, nor be destroyed., 3. Quantisation of Charge Charge exists in, discrēte amount rather than continuous value, and hence it is quantised. Mathematically,, charge on an object, g = t ne, where n is an, integer and e is the electronic charge., where, e = - 16 x 10-" C., · Coulomb's Law It states that, the electrostatic, force of attraction or repulsion acting between, two stationary point charges is given by, Also,, 10° N-m2/C?, permittivity of free space, 8.85419x 10-12 C² /N-m?, where, E,, ector form,, 1, 9. 92, r or F =, 4 TE., F, %3D, 4 TE, r, 5. Relative Permittivity It is given by the ratio, E (absolute permittivity of the medium), ɛ, =, where, e, is called relative permittivity of the, medium with respect to vacuum. It is also, denoted by K, which is called dielectric, constant of the medium. It has no units., F., um and = K ɛ,, F, К ore,, medium, 19.9, 4n E, Kr, F., medum, 6. Principle of Superposition of Electrostatic, Forces states that, the net force experienced by, a given charge particle q, due to a system of, charged particles is equal to the vector sum of, the forces exerted on it due to all the other, charged particles of the system. i.e., F, = Fo, + Foz + Fa +.. + Fo., 9192, F =, 4 n E,, F, +92, 'b+, %3D, where, g, and q, are the magnitudes of, stationary point charges and r is the distance of, separation between them in air or vacuum., %3D, rt...+, 10, Scanned with CamScanner, damstas(2 ial
