Principles of Electricity and Electromagnetism |
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Page 128
... measured is less than 0.1 ohm . One circuit for the elimination of terminal and con- tact resistances is the Kelvin double bridge which is shown in Fig . 4.20 . X is the unknown resistance and N is the standard with which it is to be ...
... measured is less than 0.1 ohm . One circuit for the elimination of terminal and con- tact resistances is the Kelvin double bridge which is shown in Fig . 4.20 . X is the unknown resistance and N is the standard with which it is to be ...
Page 134
... measured by the potentiometer on one range or the other and is the current for full - scale deflection of the meter . For example , if the meter shows a full - scale deflection for 15 amp . , S should be a 0.1 - ohm standard . The ...
... measured by the potentiometer on one range or the other and is the current for full - scale deflection of the meter . For example , if the meter shows a full - scale deflection for 15 amp . , S should be a 0.1 - ohm standard . The ...
Page 345
... measured by methods that will be described later in this chapter . From a knowledge of M and a measurement of k , r , and 0m , the ratio of M to P can be determined . The method is suitable for materials in which large magnetic moments ...
... measured by methods that will be described later in this chapter . From a knowledge of M and a measurement of k , r , and 0m , the ratio of M to P can be determined . The method is suitable for materials in which large magnetic moments ...
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alternating current alternating-current amplitude angle angular velocity anode applied approximately armature assumed atom axis calculated capacity cathode cell centimeter characteristic charge q circuit coefficient coil component condenser conduction conductor considered copper current density current flowing curve cylinder deflection determined dielectric constant direct-current discharge distance effective electric field electromotive force electrons electrostatic element energy equal equation ferromagnetic filament flux force frequency function galvanometer given grad grid hence hysteresis impedance induction insulating integral known Laplace's equation linear load magnetic field magnetic moment magnitude maximum measured medium metal meter molecules negative normal obtained ohms parallel plate polarization potential difference potential wave potentiometer produced proportional quantity R₁ radius ratio rectifier region represents resistance rotation Show shown in Fig solenoid solution substance surface temperature terminals theorem torque tube V₁ vector voltage volts wire written zero