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  • Flow of electrons through a conductor is called electric current. The substances which do not allow the electric current to pass through them are called insulators.
  • An ionic compound or electrovalent compound is formed when electropositive atoms donate electrons and electronegative atoms accept them. 

  • Electrolysis is the process due to which a chemical compound in fused state or in aqueous solution undergoes a chemical change on passing the current through it. 

  • The graphite or metal rods through which electric current enters or leaves from an electrolyte are called electrodes.

  • Cathode is the electrode, which is connected to negative terminal o…

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