Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 395
case the lines of induction lie within the ironwhile the magnetic force due to a current i is ^mrijl whereI is the length of the axis of the ring and n the number ofturns on it. The secondary consists as before of a few turns of wireconnected to a ballistic galvanometer and the induction ismeasured… … 7vvv\A/w B Fig. 241. apparatus is shewn in Fig. 241 in which C is the ring withthe two coils wound on it, B the battery, A an ampere meterfor the primary current, R the rheostat and K a reversingkey. The induced current is measured by the ballistic gal-vanometer G. By means of this arrangement…
Electricity · Magnetism
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