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Term 1

Unit 1 Dynamic Electricity and Electromagnetism: Chapter 1 Electric Current and Ohm’s Law (with Kirchhoff’s laws), Chapter 2 Magnetic Effects of Electric Current and Measuring Instruments, Chapter 3 Electromagnetic Induction, Chapter 4 Alternating Current Circuits; Term 1 review

1Current, resistance, series and parallelChapter 1 Electric Current and Ohm’s Law (A): what the book revises (current, potential difference, emf, resistance and resistivity, conductivity, Ohm’s law, conventional current), then resistors in series and in parallel and their equivalent resistance 2The emf, internal resistance and the closed circuitChapter 1 (B): the emf of a cell and its internal resistance, Ohm’s law for a closed circuit I = V_B/(R + r), terminal voltage V = V_B − Ir and the emf as the open-circuit voltage, worked circuits (series, parallel, series-parallel, internal resistance)3Kirchhoff’s two lawsChapter 1 (C): Kirchhoff’s first law (conservation of charge, the node rule) and second law (conservation of energy, the loop rule), the guidelines for assumed current directions and signs, and three worked multi-loop circuits 4The magnetic field of a wire and of a loopChapter 2 Magnetic Effects of Electric Current and Measuring Instruments (A): Oersted’s observation, the field of a straight wire (flux density B = μI/2πd, Ampere’s right-hand rule) and of a circular loop (B = μNI/2r, the right-hand screw rule, the loop as a magnetic dipole)5The solenoid, the force on a wire and parallel wiresChapter 2 (B): the solenoid (B = μnI = μNI/ℓ, poles by the screw rule), the force on a current-carrying wire in a magnetic field (F = BIℓ sin θ, Fleming’s left-hand rule, the tesla) and the force between two parallel wires 6Torque on a coil and the moving-coil galvanometerChapter 2 (C): worked force problems, the torque on a rectangular coil (τ = BIAN sin θ, the magnetic dipole moment) and the moving-coil galvanometer (construction, radial field, sensitivity)7From galvanometer to ammeter, voltmeter and ohmmeterChapter 2 (D): the galvanometer as an ammeter (shunt) and a voltmeter (multiplier), the ohmmeter and its non-linear scale, analogue and digital multimeters; the chapter summary and exercises (pp. 52–58) are not used 8Faraday, Lenz and mutual inductionChapter 3 Electromagnetic Induction (A): Faraday’s experiment and the induced emf, Faraday’s law emf = −N ΔΦ/Δt, Lenz’s rule, Fleming’s right-hand rule, mutual induction (M, the henry as V·s/A) and the two-coil experiments 9Self-induction, eddy currents and the AC generatorChapter 3 (B): self-induction (emf = −L ΔI/Δt, the henry), what the self-inductance depends on, eddy currents and induction furnaces, the emf in a straight wire moving across a field (emf = Bℓv sin θ), and the construction and emf of the AC generator 10The sine wave, the DC generator and the transformerChapter 3 (C): the sine wave of a generator and its frequency (50 Hz at home), the effective value (0.707 of the maximum), rectification and the DC generator (split-ring commutator), the transformer (turns, voltage and current ratios, step-up and step-down)11Power transmission, transformer efficiency and the DC motorChapter 3 (D): transformers in power transmission (I²R loss) and their efficiency, the two transformer examples, the DC motor (construction, Fleming’s left-hand rule, the commutator, one revolution, several coils, motor against galvanometer); the summary and exercises (pp. 86–96) are not used 12Alternating current, resistors and coilsChapter 4 Alternating Current Circuits (A): the sine waveform, frequency (50 Hz in Egypt) and the advantages of AC, why a moving-coil ammeter fails and the hot-wire ammeter, voltage and current in a resistor (in phase) and in a coil (voltage leads by 90°), inductive reactance XL = 2πfL, coils in series and parallel 13The capacitor, reactance and impedanceChapter 4 (B): the capacitor (Q = CV) on DC and on AC (the current leads, the voltage lags by 90°), capacitive reactance XC = 1/2πfC, capacitors in series and in parallel, impedance and the series RL circuit (Z = √(R² + XL²), phase angle, voltages add as vectors)14RC and LCR circuits, oscillations and resonanceChapter 4 (C): the series RC and LCR circuits (Z = √(R² + (XL − XC)²), the phase angle and the three cases, power only in the resistor), the oscillating LC circuit and f = 1/2π√(LC), resonance and the tuned circuit of a radio; the summary and exercises (pp. 114–116) are not used 15Term 1 review: circuits, magnetism, induction and ACTerm 1 review (Chapters 1–4) and Darslab’s own review tasks

☰ Year plan · Physics

Egypt›Secondary 3›Physics›Week 15

Term 1 review: circuits, magnetism, induction and AC

Week 15 · Term 1 review (Chapters 1–4) and Darslab’s own review tasks · 3 lessons

Lesson 1 Lesson 2 Lesson 3 Quiz8 Homework5

← PreviousWeek 15 · Review: AC circuits, reactance, impedance and resonance Next →Week 15 · Homework

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