e zinc and thatnone rise from the copper. Con-nect the free ends of the wiresand note that the bubbles nowrise from the copper. These bubbles are hydrogen gas formed by the chemical union of the zincand the sulphuric acid. This chemical union produces the electriccurrent, and the circuit is known… … Fig. 93, 124 Elements of Physics. thence through the outside wire and back to the zinc. Assoon as the circuit is broken the current ceases and thechemical action also ceases. This suggests that the electriccurrent may be due to the chemical action and that thetwo phenomena are dependent upon each…
Physics
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