Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 253
oducedmust be equal to it. As an example, take the battery of fourDaniells cells used before, which, when fitted up with agalvanometer of small resistance, gives 73° deflection. Nowtan 73° = 3-270, therefore \ tan 73° = l-635=tan 58° 30nearly. On introducing 24 ohms resistance, the deflectionof the… … Fig. 146. 157. Resistance of the Galvanometer.—Fit up the galvanometer, whose resistance is supposed to be consider-able, with resistance coils in the circuit of a battery or cellof known resistance, as in Fig. 146. Observe the readingwith only the resistance of the battery and galvanometer(r + G…
Electricity
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