Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 851
lu-tions of the crank per minute this magneto will generate an elec-tro motive force of about seven volts, and the bell will ringthrough 7,000 ohms external resistance. The whole is containedin a ease eight inobes long and four wide, and weighs threepounds. 834 ELECTRICAL MEASUREMENT. MEASUREMENT… … Fig. 530. duced, ana a current of known strength, C, deflects the needlethrough an angle of c^, the value of the current, which would MEASUBEMENT OF CURRENT STRENGTH. 835 produce a deflection of 1°, will be represented by the quotient ofC^hd. This value is called the constant of the instrument.…
Electrical engineering
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