American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 129
it in which there is only resistance, the currentrises and falls with the e. m. f., and is therefore said to be in phase with it. AYhenthere is resistance and inductance in a circuit the effect of inductance is, as stated,to retard the rise and fall of the current, so that it is said to lag behind…
Telegraph
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