ELECTRICITY 

 EXPERIMENT 84. SOME EFFECTS OF ELECTRICITY 



I. Put a weak solution of sulphuric acid into a beaker 

 or tumbler, and then place in the liquid a strip of zinc 

 and a strip of copper, being careful that the two strips 

 do not touch each other. 



Connect the wires fastened to the metal strips, as shown 

 in Figure 62, and then examine very carefully the contents 



FIG. 62. The sim- 

 ple cell. 



FIG. 63. Electric current causes the bell to ring. 



of the beaker. Describe any changes which you notice. 

 Does either strip of metal seem to be strongly affected by 

 the acid solution ? 



Such an arrangement of an acid and metal strips is 

 called an electric cell. 



86 



