- #1
leVanw
- 6
- 0
I connected the small copper wire and the light to a 9V battery, the light came on, but when I changed to the large copper wire, the light did not light up.
The purpose is to understand how the cross-sectional area of the wire affects electrical resistance and current flow. By comparing small and large copper wires, one can observe differences in performance, such as voltage drop, heat generation, and overall efficiency in conducting electricity.
Wire thickness directly affects electrical resistance. A larger cross-sectional area (thicker wire) has lower resistance because it provides more pathways for electrons to flow. Conversely, a smaller cross-sectional area (thinner wire) has higher resistance, restricting the flow of electrons and causing more energy to be lost as heat.
When using a small copper wire with a 9V battery, the higher resistance of the wire can lead to a significant voltage drop along the wire, reduced current flow, and increased heat generation. The wire may also heat up more quickly and could potentially become a safety hazard if it overheats.
Using a large copper wire with a 9V battery typically results in lower resistance, allowing for more efficient current flow with minimal voltage drop. The wire is less likely to overheat, making it safer and more effective for conducting electricity. The overall performance of the circuit is generally improved with a larger wire.
Copper is commonly used for electrical wiring because it has excellent electrical conductivity, meaning it allows electrons to flow easily. It also has good thermal conductivity, which helps dissipate heat effectively. Additionally, copper is relatively abundant, durable, and resistant to corrosion, making it a reliable and cost-effective choice for both experimental and practical applications.