Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 286
rature, consequentlythe air in the bulb, BC, must have been raised to doublethe temperature of that in the bulb, AB, or double thequantity of heat must have been evolved from the wireof twice the length, by the current. The heat generated in anywire is directly proportional to its resistance. In a… … ing Effect of aii ElectricCurrent. 268 PRACTICAL ELECTRICITY. 2. Heat Developed is Proportional to the Square ofthe Current.—To prove this statement, connect an ammeterin series with either of the bulbs in Fig. 237 by using twoadjacent posts, 1-2 or 2-3. Note the value of the current inamperes, and…
Electricity · Magnetism
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