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Practical electricity .. with questions and answers (1911)

Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 105

An illustration from Practical electricity .. with questions and answers, 1911, leaf 105
VOLTS Figure 41Certain heat produced in lamp … II0VCLT5I AMR Figure 42Twice as much heat with san ^voltage and twice the current

Electricity

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