hi
i want to ask that how does capacitor work in fan and what is the use of capacitor in fan and other electrical equipment

 

Have a look in our E-book, here:
http://www.allaboutcircuits.com/vol_2/chpt_13/9.html

 

capacitor stores or releases electrical energy. How it is used in an appliance means how energy is processed inside it and it is different for every equipment.