Snow, Benjamin Warner, 1860- · Madison, Wis. · leaf 511
at is, it is doubledback upon itself. AVhen the plug is in-serted between the blocks, the currentflows from one block through the plugto the next; but when the plug is with-drawn, the current, in passing fromblock to block, must pass through thewire, the resistance of which is to beintroduced. By… … Fig. 260. A resistance coil. 443. Variation of Eesistance with Temperature. The re-sistances of all bodies vary with a change of temperature. Me-tallic conductors, in general, increase in resistance as the tem-perature rises, and decreases in resistance as the temper-ature falls. Indeed, through…
Physics
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