Plasma cutter with pencil lead - Little Shop of Physics

The video tutorial explains how to create a simple plasma cutter using basic materials like alligator clips, tinfoil, lead, and 9-volt batteries. It details the construction process, including setting up the tinfoil and connecting the batteries in series. The science behind the experiment is discussed, highlighting how a small point of contact allows current to flow, creating heat that vaporizes carbon atoms and forms plasma. The final assembly instructions are provided, resulting in a functional plasma cutter.

Which of the following is NOT a tool required for the plasma cutter experiment?

• 9-volt batteries

• Screwdriver

• Piece of tinfoil

• Alligator clips

What is the purpose of the rubber band in the construction process?

• To hold the tinfoil in place

• To insulate the wires

• To connect the batteries

• To attach the lead

How are the 9-volt batteries connected in the setup?

• In parallel

• Individually

• In series

• Randomly

What happens when the piece of lead touches the tinfoil?

• The lead melts

• A small ball of plasma forms

• The tinfoil changes color

• The batteries discharge completely

What is the result of the reaction between the lead and the tinfoil?

• Both are consumed

• Only the lead is consumed

• Only the tinfoil is consumed

• Neither is consumed