Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 116
s of the in-strument. This, of course, must slip on over all parts exceptthe bell, a slot being cut in the lower side to allow the wire Nto pass through. This box may be made of pine, sandpaperedsmooth and stained with cherry or mahogany stain. EASY ELECTRICAL EXPERIMENTS.CHAPTER XXX. HOW TO MAKE A… … Fig. i.current. The greater the resistance in an electric circuit, the lessthe current, other things being equal. For this reason, resistancesare made use of to control the strength of electric currents. 102 EASY ELECTRICAL EXPERIMENTS. When a resistance is so arranged that its value can be easily…
Electric apparatus and appliances · Electricity
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