Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 249
placingthe rods in the mercury cups with their lengths at right 156-157] MEASUREMENT OF CURRENT 239 angles to their original positions A and I) are connectedtogether, and also B and C. Thus if A be connected to the positive pole of the battery,in the first position the current flows from A, then… … Fig. 151. A cylindrical shaped piece of ebonite, which can be turnedround its axis, carries two strips of brass P, Q at oppo-site extremities of a diameter of the cylinder. These areinsulated from each other, but P is connected to a bindingscrew A by means of one of the supports in which the axisof…
Electricity · Magnetism
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