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Question

Define conduction of electricity?


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Solution

Conduction of electricity:

  • Conduction of electricity is the movement of the charged particles in an organized manner resulting in a total movement of charge through the material. When charged particles move in an appropriate motion we get an electric current.
  • The conduction of electricity through a solution involves the movement of charged particles.
  • The phenomenon associated with electrical conduction through gases has found many applications in modern technology.
  • Electricity flows through conductors in two ways.

(i) Electron movement as in the case with most metals.

(ii) Flow of ions which may be charged atoms or molecules.

For example:

  • In an aqueous solution, sulphuric acid dissociates into 2H+ and SO42- which are positive and negative ions.
  • The positive charges are attracted to the negative electrode and the negative charges are attracted to the positive electrode.
  • This movement is known as ion flow or ion drift.

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