الفيزياء العامة الجزء الثاني#موقع الفيزياء.كوم

4.5 Energy stored in a charged capacitor (in electric field) 135
6.6 Capacitor with dielectric 145
6.7 Problems 149
Chapter (7) Current and Resistance
7.1 Current and current density 156
7.2 Definition of current in terms of the drift velocity 157
7.3 Definition of the current density 157
7.4 Resistance and resistivity (Ohm’s Law) 159
7.5 Evaluation of the resistance of a conductor 160
7.6 Electrical Energy and Power 163
7.7 Combination of Resistors 165
7.7.1 Resistors in Series 165
7.7.2 Resistors in Parallel 166
7.8 Solution of some selected problems 171
7.9 Problems 177
Chapter (8) Direct Current Circuits
8.1 Electromotive Force 182
8.2 Finding the current in a simple circuit 183
8.3 Kirchhoff’s Rules 187
8.4 Single-Loop Circuit 190
8.5 Multi-Loop Circuit 195
8.6 RC Circuit 205
8.6.1 Charging a capacitor 205
8.6.2 Discharging a capacitor 207
8.7 Electrical Instruments 213
8.7.1 Ammeter and Voltmeter 213
8.7.2 The Wheatstone Bridge 214
8.7.3 The potentiometer 215
8.7 Problems 216
Multiple Choice Questions 220
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