Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 250
Fig. i. … Fig. ii. of any plug throws into the circuit that resistance coil which inthe figure lies below that plug. Hence, by a suitable removal ofplugs we can throw into the circuit any resistance that is con-tained in the box. The figure indicates that the coils are so wound as to obviateerrors due to…
Electricity
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