Make an Electric Circuit with a Graphite Pencil
We’re learning all about electricity science today at Green Kid Crafts. Did you know you can make a circuit of electricity using a graphite drawing pencil? This might be one of the coolest science activities we’ve shared because the possibilities are endless! You can draw anything from a circle to a tree; just use your imagination!
- 1 Graphite Art Pencil
- Mini LED Light Bulb
- 9V Battery
Plan your design on a piece of paper.You can draw a shape to start, adding the graphite later. Be sure to create a shape outline with two openings at each end.
Create a thick line of graphite over your shape. Add positive and negative symbols to the two open areas as guides. We colored the inside of the circle like the earth but you can draw other things too!
Tape the wires of your LED bulb to the graphite opening aligning the the long wire with the positive side of the opening and the shorter wire with the negative side of the opening. Tape the bulb in an upright position.
Place your 9v battery on the opposite end over the positive and negative sides of the graphite. The light bulb should light up!
How does this Electrical Circuit Work?
Electricity has the ability to flow from one place to another along a path. A circuit is a closed path from one place to another like a loop. We’re creating an electrical circuit with the graphite, light bulb, and battery.
The graphite acts as a path for the electrical energy. When the battery is placed on the graphite, energy flows from the battery, along the graphite path, through the wires on the light bulb, continuing back to the battery completing the circuit. If the battery is removed, the circuit is broken. This is also true if you remove the light bulb. We use the light bulb to show us the electricity that is flowing along the path.