Question

a)  Which one of the following will change electrical energy into mechanical energy?

• • A light bulb

  • A neon tube

  • A battery powered motor

  • A dry-cell battery

Question

b)  When an electric hair dryer is used, electrical energy is being changed into three main types of energy.

     These are ...

• • heat, sound, and light energy.

  • light, kinetic, and magnetic energy.

  • kinetic, heat, and sound energy.

  • magnetic, sound, and heat energy.

Question

c)  When a washing machine is used, electrical energy is being changed into three main types of energy.

    These are ...

• • heat, potential, and light energy.

  • kinetic, heat, and sound energy.

  • kinetic, sound, and potential energy.

  • heat, wave, and sound energy.

Question

d)  When an electric kettle is used, the main energy change that occurs is the transformation of electrical energy into ...

• • heat energy.

  • mechanical energy.

  • magnetic energy.

  • wave energy.

Question 1Change answer

e)  When the kettle boils, other energy changes occur. 

e)  When the kettle boils, other energy changes occur. 

     Name another form that the electrical energy is transformed into.  energy