i cannot  understand, how it can  be that '  higher the power rating smaller the resistance 'of a appliance as it  is said in video lecture by shaleen ? can you explain how and  why?

 

electric power is the rate at which electrical energy is produced or consumed in an electric circuit.
 
p = vi = i2 r = v2 /r
 
hence, power is inversely proportional to the resistance. therefore, higher is  the power rating smaller is the resistance.
 
example: