A Glass Conductor - Little Shop of Physics

The video tutorial explains the structure and function of a glass base with wires and a filament. Initially, the current flows through the filament, but when heated, the glass becomes a conductor. The filament oxidizes and burns in air, while the glass, when heated, allows current to pass through, making it glow. The video also demonstrates how metal dissolved in glass can surface when heated, and how the glass can melt due to the heat generated by the current.

What happens to the filament when it burns out?

• It stops conducting electricity.

• It becomes a conductor.

• It turns into a gas.

• It glows brighter.

Why does the filament oxidize quickly when exposed to air?

• Because air contains oxygen.

• Because air is an inert gas.

• Because air is a good conductor.

• Because air is a poor conductor.

What role does an inert gas play in the filament's environment?

• It cools the filament.

• It accelerates oxidation.

• It prevents oxidation.

• It makes the filament glow.

How does glass become a conductor?

• By exposing it to light.

• By heating it to a high temperature.

• By applying pressure.

• By cooling it down.

What happens to the metal dissolved in glass when it is heated?

• It turns into a liquid.

• It comes to the surface and looks shiny.

• It evaporates.

• It becomes invisible.