energy transfer by appliances Flashcards
1
Q
what is the energy transfer for blender and a fan?
A
electrical energy -> kinetic energy of electric motors
2
Q
what is the energy transfer for iron and kettle?
A
electrical energy -> thermal energy
3
Q
what is the energy transfer for hair dryer and washing machine?
A
electrical energy -> kinetic energy of electric motors + thermal energy
4
Q
what does the power rating tell us?
A
maximum amount of energy transferred between stores per second when appliance is in use
5
Q
what is the trend between power rating and the 2 types of appliances?
A
appliances designed to generate thermal energy typically have a higher power rating then appliances designed to generate kinetic energy
