Principles of Electricity and Electromagnetism |
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Page 56
... measured by recording the rate of deflection of the needle and the range may be varied by means of auxiliary capacities . Currents may also be measured by the aid of Ohm's law ( Sec . 3.4 ) . If a resistance R is placed between the free ...
... measured by recording the rate of deflection of the needle and the range may be varied by means of auxiliary capacities . Currents may also be measured by the aid of Ohm's law ( Sec . 3.4 ) . If a resistance R is placed between the free ...
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 i ' 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 i ' 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 ...
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angle antenna applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero