## Basic Electrotechnics |

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### Contents

Electrostatic Fields Condensers and Dielectrics | 40 |

Electrodynamics | 79 |

The Calculation of Magnetic Fields | 120 |

Copyright | |

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### Common terms and phrases

air-gap alternating current ampere turns amplitude angle applied voltage armature axis Calculate capacitance centre component condenser conductor connected in series core coulombs cross-section current density current element current flowing curve defined diameter dielectric constant direction displacement distance eddy current electric field electromagnetic electromotive force electrons energy equal equation farads field intensity flux density flux linkage frequency galvanometer harmonic heat Hence hysteresis impedance induced e.m.f. insulation integral iron joules leakage length line of force load M.K.S. units magnetic field magnetic flux magnitude maximum measured metre moving coil mutual inductance negative Ohm's law ohms parallel perpendicular phase plane plate pole pitch positive charge power factor produces quantity R.M.S. value radiation radius ratio reactance resistance resonance rotor round secondary self-inductance shown in Fig sinusoidal space strength surface temperature termed torque total current vector diagram velocity voltage volts wattmeter watts wave front winding wire zero