Friday, September 21, 2018

Power and Energy of Electric Appliances

We use electric energy to do various jobs in our daily lives conveniently. On all 
these occasions we convert electric energy into another form of energy to suit our 
requirements. This energy conversion takes place in various electric appliances. 
The instruments used for these energy conversions are known as electric appliances. 
The main forms of energy conversions that take place in some electric appliances 
used in daily life are given in the Figure 


In  some  electric  appliances,  after  the  first  energy  conversion,  another  energy 
conversion also takes place and we use that energy. As an example, in a filament 
bulb, electric energy is initially converted into heat which increases the temperature 
of the filament resulting in the emission of light. In fluorescent lights electric energy 
is first converted into ultraviolet radiation which is next converted into visible light.

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