CONTENTS · Part 2

. The Solenoid and the Toroid . Force between Two Parallel Currents, the Ampere . Torque on Current Loop, Magnetic Dipole . The Moving Coil Galvanometer CHAPTER FIVE M AGNETISM AND M ATTER . Introduction . The Bar Magnet xiv . Magnetism and Gauss’s Law . The Earth’s Magnetism . Magnetisation and Magnetic Intensity . Magnetic Properties of Materials . Permanent Magnets and Electromagnets CHAPTER SIX E LECTROMAGNETIC I NDUCTION . Introduction . The Experiments of Faraday and Henry . Magnetic Flux . Faraday’s Law of Induction . Lenz’s Law and Conservation of Energy . Motional Electromotive Force . Energy Consideration: A Quantitative Study . Eddy Currents . Inductance . AC Generator CHAPTER SEVEN A LTERNATING C URRENT . Introduction . 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 . AC Voltage Applied to a Series LCR Circuit . Power in AC Circuit: The Power Factor . LC Oscillations . Transformers CHAPTER EIGHT E LECTROMAGNETIC W AVES . Introduction . Displacement Current . Electromagnetic Waves . Electromagnetic Spectrum ANSWERS xv