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Draw a colored line showing the continuous conducting path.
Based on the question above, which of the bulbs will light?

Categorize the following materials as conductors or insulators.
Metal Paperclip
Pencil Lead
String
Air
Lightbulb filament
Threaded part of lightbulb
Insulators
Conductors
What is required for lightbulbs to light up? List at least 2 things and mention the terms conductor and/or insulator.