Table of Contents
5
Chapter 6
Series Circuits . . . . . . . . .49
Voltage Drop
Summary of the Laws of a Series Circuit
Chapter 7
Parallel Circuits . . . . . . . .55
Equal Resistors in Parallel
Unequal Resistors in Parallel
Conductance
Two or More Resistors in Parallel
Equivalent Resistance
Applications
Chapter 8
Sources of Electricity—
Batteries . . . . . . . . . . . . . . .65
Sources of Electricity
The Voltaic Cell
Cell Connections
Primary Cells
Secondary Cells
Series and Parallel Connections
Battery Capacity
Chapter 9
Sources of Electricity—
Friction, Heat, Pressure,
Light . . . . . . . . . . . . . . . . . .73
Voltage from Friction
Voltage from Heat
Voltage from Pressure
Voltage from Light
Chapter 10
Magnetism . . . . . . . . . . . . .77
Lodestones
Permanent Magnets
Laws of Magnetism
Magnetic Field Pictures
Electricity and Magnetism
Electromagnets
Relays
Solenoids as Switches
Hall Effect Devices
Magnetism by Induction
Magnetic Shielding
Chapter 11
Motors . . . . . . . . . . . . . . . .87
How the Motor Works
The Commutator
Motor Circuits
The Complete Motor
Motor Principles
Chapter 12
Direct Current
Generators . . . . . . . . . . . .95
Direction of Current
The Generator
The Commutator
Generator Output
Generator Losses
Field Excitation
Chapter 13
Alternating Current . . .103
Vectors and Sinusoidal Waveforms
Frequency
Period
Average Values
Effective Values
Peak-to-Peak Values