Can wood, silver or yarn light up a light bulb? I think wood can carry a current.
Do you mean as heated filaments? In the presence of oxygen? Some of Edisons's first and longest-lived bulbs used carbon filaments.
Wood cannot carry current unless it is wet.
I guess if all four switches were turned on.Would just just silver ? Why wouldn't yarn? I understand wood when it is wet that makes sense.
I did not realize you were talking about switches to turn on and off a light bulb.
Silver should work as the blaDE and contacts of a knife switch; the others won't.
See
http://catalog.miniscience.com/catalog/electricity/Knife_Switch.html
Thank you! I will read the link and study. Might have other questions maybe.
No, wood, silver, and yarn alone cannot light up a light bulb. In order to light up a light bulb, you need a complete electrical circuit that includes a power source, such as a battery or a power outlet.
While silver is a good conductor of electricity, it still cannot generate an electrical current on its own. It needs a power source to provide the necessary voltage and current for the light bulb to illuminate.
Wood, on the other hand, is an insulator and does not conduct electricity. It prevents the flow of electric current, so it cannot carry a current or light up a light bulb.
Similarly, yarn is also an insulator and does not conduct electricity. It is made of materials like cotton, wool, or synthetic fibers, which do not allow electric current to flow through them.
To light up a light bulb, you would need to connect the power source, such as a battery, to the light bulb using conductive materials like metal wires. The power source supplies the necessary electrical energy to the light bulb, allowing it to produce light.