In the given circuit the switch is replaced by a paper clip, silk thread, pencil lead, plastic scale one by one. What type change you will observe in the bulb and circuit? Note it down in the following table. Objects Bulb glows or not Object is conductor or insulator SI. No. 1 Paper clip 2 Silk thread 3 Pencil lead 4. Plastic scale
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Paper clip - Conductor
Silk Thread - Insulator
Pencil Lead - Conductor
Plastic Scale - Insulator
When the material is a conductor bulb will glow
When the material is an insulator bulb will not glow
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