Describe what would happen if you mixed potassium chloride (KCI) with water ?

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Explanation:

as potassium chloride(KCI) dissolves in water, the potassium and chloride  ions are formed and hydrated. Ion-dipole forces attract the positive(Hydrogen) end of the polar water molecules to the negative chloride ions at the surface of the solid, and they attract the negative(oxygen) ends to the positive potassium ions

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current