Question

Which two forms of energy does a hairdryer convert electric energy into? A.)chemical energy

B.) gravitational potential energy
C.) magnetic energy
D.) motion energy
E.) radiant energy

Answer 1

Answer;

D.) motion energy

E.) radiant energy

Explanation;

• Energy is the ability to do work. From the law of conservation of energy, energy can not be created nor destroyed by may be transformed from one form to another. Instruments or devices which converts energy from one form to another are called transducers.
• Hair dryer is an example of a transducer which converts electrical energy to either thermal or heat energy and also to kinetic energy. Electrical energy entering the hair dryer is converted to kinetic energy or motion energy as the small electric motor in the dryer spins a fan blade.
• Additionally, electrical energy is also converted into heat or thermal energy in a grid of wire that heats up. The fan pushes air across the hot wires, and hot air blows out the nozzle of the hair dryer.

Answer 2

D, because the hairdryer uses a fan
E, because it produces heat