Volume 1

20 Mar. 1876

Page 60

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or other liquid included in the circuit. (R=B+L+W). Hence

(b) I=E/(B+L+W)
5. The vertical vibration of the wires cd, gf, (Fig I) occasions an alternate increase and decrease in the resistance of the water (e). The maximum intensity (I) of the current is reached when the minimum resistance (w) of the water is attained; and the minimum intensity (i) when the maximum resistance (W) is reached. Hence
   
   (c) I=E/(B+L+w)
   (d) i=E/(B+L+W)
6. (w) Let the minimum resistance of one cell of water (w) = 50
   (E) Let the electro-motive force of one cell of battery (E) = 100
   (W) Let the maximum resist. of one cell of water (W) = 100
   (B) Let the internal resistance of one cell of batt.(B) = 10
   (L) Let the resistance of the line (L) = 10
   

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Volume 1

20 Mar. 1876

Page 60