Why the bulb light when the two electrodes were in contact with each other?
Why the bulb light when the two electrodes were in contact with each other?
The small amount of heat from the lit bulb bends the bimetallic strip so it makes contact with the other electrode. With the two electrodes touching each other, the current doesn’t need to jump as an arc anymore. Consequently, there are no charged particles flowing through the gas, and the light goes out.
Why do some compounds dissolve in water cause the bulb to light?
An electrolyte is a substance that — when it is in an aqueous solution — conducts electricity because of the presence of free ions. If the contacts of a lightbulb are submerged in an electrolyte solution, the lightbulb lights up when it detects an electrical current.
How do you light a lightbulb with a saltwater tank?
Remove the electrodes from the cup and then stir in a teaspoon of salt until it dissolves. Put the electrodes in the salt water without touching them together. Watch the light bulb.
Can a magnet work underwater?
Water is almost completely non-magnetic, so magnets work underwater the same as they do in air or in a vacuum. Magnets involve force. In some cases, extremely hot water may weaken magnets, but for the purposes of everyday life, it’s really a non-issue….
Why is water repelled by a magnet?
Water is diamagnetic (quantum mechanical effect) and therefore experiences a repelling force by magnetic fields. because the water from your faucet isn’t pure water. it contains minerals that can react with a magnet….
Can magnets work in space?
Magnets can be used in space. Magnets don’t need gravity or air. Instead, their power comes from the electromagnetic field they generate all by themselves. One class of magnets, called electromagnets, does need electricity to work….
How can you make a magnet without a magnet?
Also, make sure that you squeeze it down the nail in the same manner. The electricity must flow in the same direction to generate a magnetic field….Making Electromagnets
- a big iron nail.
- 3 feet thick covered copper wire.
- A D-cell battery.
- Small electronic items, such as paper clips or buttons.
- Wire strippers Masking tape.