Applications of The Heating Effect of Current


 
 
Concept Explanation
 

Applications of The Heating Effects of Current

The heat generated when current passes through a resistive material is used in any many common devices. The material through which the current passes is surrounded by an insulating substance in order to prevent the current from flowing through the person who is cooking to the earth when he or she touches the pan.

Hair dryer, in which a fan blows air past heating coils. In this case the warm air can be used to dry hair, but on a broader scale this same principle is used to dry clothes and to heat buildings.

Other practical application includes heater, toaster, electric kettle etc.

Uses of Heating Effect: 

 Some of important applications of heating effect of electric current  are :

  • For production of light, heating effect of electric current is utilized in the electric bulbs.
  • For the working of electrical heating appliances such as water heater, electric room heater, electric iron, etc. the heating effect of electric current is utilized.
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    Sample Questions
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    Question : 1

    Match the column:

    Column-1 Column-2
    (A) Battery (p) The thin wire in an electrical bulb that glows when electrical current passes through it.
    (B) Filament(q) Combination of two or more cells
    (C) Electric geyser(r) Makes use of heating effect of current
    (D) Electric bell  (s) Electromagnet

                                       

    Right Option : C
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    Explanation
    Question : 2

    Heating effect of electric current is used in __________________

    Right Option : B
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    Explanation
    Question : 3

    Electric heater is used to convert electrical energy to ______________

    Right Option : A
    View Explanation
    Explanation
     
     
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