Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 321
nsulated from each other. An electrometerneedle is mounted above them as shewn in the figure ; the axisof the needle being parallel to the adjacent edges of the platesand the needle is electrified, let us suppose positively. Onconnecting the plates by a piece of wire the needle is deflected,being… … Fig. 186. Thus it would appear that zinc and copper in contact differin potential by about 0-8 volt wliile when immersed in diluteacid they are at the same potential. It will be noticed thatthis potential difference 08 volt is just equal to the e.m.f. ofa zinc copper acid cell. According then to…
Electricity · Magnetism
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