lessons that use D battery
| title | description | rating | post date | author | |
|---|---|---|---|---|---|
| Safety Pin Motor |
This lesson describes a simple motor that can be constructed in 15 minutes with inexpensive materials. It involves all the basic principles of motors involving magnetic force, electromagnets, and commutators (rotating switches common in many commercial motors). This device is... |
(9 votes) |
25 Jan 2013 | guy |
 |
| Basic Electromagnets |
This lesson provides some general background on electromagnets and describes three simple activities for students to explore on their own. For reference, it also includes formulas for the magnetic field strength around several common types of electromagnets. learning go... |
(8 votes) |
25 Jan 2013 | guy |
 |