Energy Changes Forms. Energy Changes Forms Electrical Changes to Light and Heat.

Energy Changes Forms

Energy Changes Forms

Batteries change chemical energy into electrical energy

Energy Changes Forms

Wind turbines change mechanical energy into electrical energy

Energy Changes FormsElectrical Changes to Light and Heat

Question to consider…

Can electrical energy be changed into other forms of energy?

Sound

electrical energy can change into sound energy

Motors

Motors change electrical energy

(from a battery or voltage source) into mechanical energy (used to cause rotation).

Motors

Motors change electrical energy

(from a battery or voltage source) into mechanical energy (used to cause rotation).

Examples in the Garage

• Leaf blower• Garage door• Lawn mower• Car• Motorcycle

Examples in the House

•Can opener•Mixer•Blender•Vacuum cleaner•Air conditioner•Washing machine•Dryer•Ceiling fan•Fan•Pencil sharpener

Other Examples

Anatomy of a Motor

Source of Electricity (like a Battery) and a Magnet

Making a DC motor

Making a DC motor

Making a DC motor

Sand only half of the wire

Making a DC motor

Making a DC motor

If Your Motor Doesn’t Run

Don’t get upset, troubleshoot the problem. You will probably learn more if your project does not work perfectly from the start.

Make sure:

All the connections between the battery and the motor are solid.

The armature wire is as straight as possible.

The enamel has been sanded properly, half the diameter on one side and around the entire wire on the other side.

Further Experimentation

Once you have a project working, it is fun and educational to try new adjustments to try to improve performance. Sometimes what you try might not work as well.

You might consider:

Make a new armature/coil with more or fewer windings.

Adjust the gap between the magnet and the edge of the coil to be less but not touch at anytime.

Try a stronger magnet such as a neodymium magnet.

Looking at Cross Section of Wire for Half Sanded Side

Enamel Coating

Copper Wire