Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 268
s running fromA to B and there is a steady drop of potential along the wire.The positive pole of one of the batteries to be tested isconnected to A, the negative pole is connected through asensitive galvanometer G to a, sliding contact piece P withwhich contact can be made anywhere on the wire. G.… … Fig. 159. A and P, But the electromotive force B^ of this batterytends to drive a current round the same circuit in the oppositedirection. If Bj^ is greater than the drop in volts between Aand P due to the main current, the current in the galvano-meter will be from P to ^; if ^j is less than the…
Electricity · Magnetism
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