| Topic | Summary |
| Heating effects |
Electricity can be transferred into other forms of energy such as the heat which generates light in headlight bulbs. |
| Chemical effects |
Electricity may be used to store energy through chemical reactions such as in a lead acid battery. |
| Magnetic effects |
Current passed through a coil of wire creates a magnetic field. Turning the current on and off can activate a mechanical relay, or create the rotary motion of an electric motor. |
| Electrical resistance |
Electrical resistance is the measure of how much an object resists the passage of an electrical current. Resistance is measured in ohms. |