Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 284
otal resistance in circuits is the resistanceof the voltmeter and the battery, phis the entire insulation resistanceon all the wires, etc., connected in circuit. To put this in mathematical form, the voltage of the cells maybe indicated hy the letter E; and the reading of the voltmeter whenthe… … Fig. 33. Connections of Voltmeter and Battery for Testing Insulation Resistance. 238 ELECTRIC WIRING 39 It is a fact which the reader undoubtedly knows, that the E. M. F. asindicated by the voltmeter in Fig. 34 is inversely proportional to theresistance: that is, the greater the resistance, the…
Architecture · Building · Carpentry
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