Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 247
s shown in the diagram.At m and 7i are coils of Avire,usually having equal resistances;at p is connected the resistancebox BBj and at o is connected theconductor of wdiich the resistanceis to be measured. The wires from the battery, or othersource of current, are connected at B and D, as shown;and… … §§378-379] ELECTRICAL MEASUREMENTS 233 from the resistance-box until we are sure that the resist-ance of BB is greater than i^, and press the key. Weshall find that we get a deflection of the galvanometerin one direction; then, if we make B greater than BB,the deflection will be in the opposite…
Physics
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