Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 100
scale when no current is flowing. The relationbetween deflection and cuiTent is complicated, so that the scale mustbe calibrated bj^ direct comparison with an ampere balance; the scaleis found to be more open in the middle than at the ends. Since the deflection depends upon the square of the… … Fig. 85. Fig. 86. Resistances.—For purposesof electrical testing, it is usualto arrange the standard setsof resistances in boxes, andthe variety of ways in whichthis is done is very great. Onevery common arrangement isshown in Fig. 85. The Avirewhose resistance is approxi-mately that required, is…
Electricity · Magnetism
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