VIII.CURRENT ELECTRICITY 
a. Resistance to electric current
b. Heating effect of an electric current
      i.Laws of  heating
      ii.Electrical Power
c.Domestic Electricity
      i.Fuses and cables
      ii.Electrical Installation of a House
d.Chemical Effect of an Electrical Current 
      i.Electrolysis
      ii.First Law of Electrolysis
      iii. Application of Electrolysis
e.Cells
      i.Dry Leclanche cell (dry cell)
      ii.Lead-acid  accumulator