Light the Bulb
- Find four distinct arrangements that light the bulb. Record each arrangement that lights the bulb in your notes.
- Find four distinct arrangements that do not light the bulb. Record each arrangement that lights the bulb in your notes.
- What do the arrangements that light the bulb have in common? How do the arrangements that light the bulb differ from those that don't?
- Write a general rule for what's required to light the bulb.
Materials
Light the bulb. Observe and record what happens when various objects (coins, paper, pencil lead, your finger) are inserted in the circuit. What do things that light the bulb have in common?
The Bulb
Make a careful diagram of the bulb. Pay close attention to how wires from the filament are attached to the base. Also indicate which parts are made of conductors and insulators.