Physics – Electrical Conductivity Of Liquids -Important Points

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Physics

 

 

 

 

Electrical Conductivity Of Liquids

 

 

 
1-The phenomenon of flow of current through liquids is known electrolysis.

2-The phenomenon of flow of electrons through solids is known as conduction.

3-The phenomenon of flow of electrons through gases is known as discharge.

4-Pure water does not allow the current to pass through most of the liquids which conduct electricity are solutions of acids, bases and salts.

5-The liquids which allow the current to pass through them are called electrolytes.

6-The container in which electrolysis takes place is known as voltmeter.

7-The chemical decomposition of an electrolyte when electricity is passed through it is known as electrolysis.

8-The mass of the ions deposited is directly proportional to strength of the current and time of flow.

9-The electrolysis is used in electroplating, electrotyping and metallurgy.

10-Electric current flows in metals by movements of electrons.

11-Electric current flows in metal solution by movement of ions.

12-Electroplating is used in ornamentation and decoration.

13-Good Conductors -The substances which allow the electricity to pass through them are called good conductors.Examples -Silver,Copper,Iron etc.

14-Poor Conductors-The substances which does not allow the electricity to pass through them are called poor conductors.Examples- Rubber,Wood,Plastic etc.

15-Electrodes-The plates in the liquids whose ends are connected to positive and negative terminals of the battery.

16-Electroplating-The process of coating of one metal with another material is called electroplating.

17-The flow of electrons is called electric current or the flow of charge through the conductor per unit time is called electric current.

18-The instrument which is used to check the flow of current is called tester.

19-The method of purification of metals by using electricity is called electro-refining.

20-The process of coating of iron and steel sheets with a layer of zinc is called galvanisation.

21-Air is insulator.

22-LED means Light Emitting Diode

23-LED light sources consume less electricity

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