Do you know what allows electricity to pass through it? Conductors are substances that permit electricity to flow through them. The conductor copper wire is effective. Insulators are substances that prevent electricity from passing through them. An excellent insulator is a plastic.
Numerous items you use daily are powered by electricity. These devices consist of circuits, which can be very simple (like a lamp with a single lightbulb) or quite complicated (like a computer). Build your short circuit using this project, then use it to determine which everyday objects in your home are electrically conductive.
What Allows Electricity To Pass Through It?
An electric meter. Utility companies ensure that their current positively flows through their power meters, regardless of whether it passes through anything or not, to ensure accurate invoicing of your consumption.
Which Material Conducts Electricity?
What does the word “electrical” actually mean? You undoubtedly hear it a lot. Electricity is often used to describe the movement of electrically charged particles through metal conductors. We refer to the movement of electricity as current.
In general, metals are excellent conductors, allowing current to flow freely. Insulators are substances that restrict the ease with which current can flow. The majority of nonmetal materials, including rubber, plastic, and wood, are insulators.
You’ll notice if you’ve ever plugged something into a wall outlet. You won’t be amazed when you touch the cord since the prongs on the plug, and the wire inside are made of metal and protected by plastic or rubber insulation.
For current to flow in an electric “loop,” it must be completely closed. An example of this is a closed circuit. This explains why batteries have two ends (positive and negative) instead of simply one and why electrical outlets have two prongs. You can make a complete loop by joining them both to a circuit. The loop becomes an open circuit; no current will flow if it is even slightly damaged.
By deconstructing a flashlight, you will create your short circuit in this project (with permission, of course). Using your circuit, you will test household objects to see if they are conductors or insulators. The circuit will become closed when you attach it to a conductor, turning on the flashlight. The circuit will remain open if it is connected to an insulator, keeping the light off.
You will need three wire scraps from outdated electronic equipment to complete this project. Old cell phone chargers that are in your rubbish drawer may be perfect. Hardware and some craft stores may also sell wire. Trim three wire sections to a length of at least 10 centimeters each.
To reveal the metal inside each wire, have an adult remove about one centimeter of insulation using scissors or a sharp knife. (If they are accessible, you or an adult can use a specific tool called wire strippers to accomplish this.)
Take your flashlight apart. Take the batteries out. Remove the on/off switch and, if feasible, detach the “head” (the portion that houses the bulb). Most flashlights are simple to disassemble by hand, but you might require an additional instrument (such as a screwdriver) and assistance from an adult.
Attention: Electricity from wall plugs is highly lethal and dangerous. Never open an electronic gadget or cut it into a wire while plugging it into a wall socket.
Trace the circuit by inspecting the flashlight’s interior. Keep in mind that electricity can only flow through a closed circuit. The circuit in a flashlight typically travels from one end of the battery compartment to the other via an on/off switch, the bulb, and the back. Identify the circuit, please.
The first step is to use two wires to attach the lamp directly from the battery box. Not all flashlights are made equal, so you may need to experiment with this. Is building your new closed circuit difficult?
Positive (+) and negative (-) should be present in the battery compartment. One end of a wire should be taped to the metal components on either end of the battery chamber. (Tip: If the batteries slide into the flashlight body rather than being secured by clips or springs, use rubber bands to keep them together end to end when you remove them from the flashlight.) Make sure to tighten the wires, so they make excellent contact.
Now locate two metal contacts on the bulb casing, and use electrical tape to connect the other ends of the wires to those. Tip: Sometimes, the flashlight’s entire interior is made of metal, acting as one of the contacts. Did you succeed in building a circuit and getting the light bulb to turn on? If you created the contacts correctly, this should result in the bulb lighting up. Do not worry if the bulb does not illuminate. You can check a few items, including:
Perhaps you own an LED flashlight. A light-emitting diode is what it stands for. A unique kind of lightbulb called an LED functions as a one-way electrical valve. It only illuminates when the correct connections are made between its positive (+) and negative (-) sides. To see if it lights up, try reverse connecting the two wires to the battery pack.
Your wires may not be making adequate contact with the metal in the flashlight circuit, which could be another cause for your lack of illumination. Try pinching the contact points with your fingers, or use anything to squeeze the connections, like a tiny clothespin or a pair of binder clips. There ought to be a functional circuit presently. In essence, you have replaced the battery and light bulb from the flashlight housing with two wires. By inserting a third wire, you may use this circuit to test the conductivity of everyday home items. From one end of the battery pack, unplug the wire.
Your bulb should turn off due to the open circuit created by this. Attach your third wire’s taped end to the battery pack’s end. Your circuit should now have three wires, with two free ends. Connect the wires’ two free ends by touching them. Your light should illuminate as a result of this, closing the circuit once more.
Simultaneously touching two free wire ends to a material to test its conductivity. What happens if you touch aluminum foil or paper clips, for example, metal objects? Does the fact that the bulb lights up indicate that the substance is an insulator or a conductor? What happens if you touch rubber, plastic, or other non-metal objects? The light turns on or remains off.
Are There Any Nonmetal Conductive Materials In Your House?
Once you have disassembled a flashlight, reverse engineering it could need some effort. But if you use two wires to link the battery compartment to the bulb, you should be able to get the flashlight to work without its power switch. You can make a “tester” by including a third wire. The bulb should turn on as usual when you touch a metal object with the free wire ends.
This works because the metal objects act as conductors and establish a closed circuit. Since no current can flow when you touch insulating materials like plastic, rubber, or wood, the circuit remains open, and the light remains off.
Finding nonmetal conductive materials might be challenging. Some flashlights may have a core made from a graphite pencil. However, compared to metals, graphite has a very high resistance. Therefore the light source may appear very faint or not work at all.
To Sum Up
This was all about What Allows Electricity To Pass Through It? Conductors are those substances that allow electricity to transfer through them. The conductor copper wire is very effective to use. Insulators are those substances that allow electricity from transferring through them. A good insulator is a plastic.
Frequently Asked Questions
What three conditions must a circuit meet?
· It takes a power source to maintain the flow of electrons (electricity).
· In the event of a short, a protection device keeps the circuit from being harmed.
· The electricity is converted into work via the load device.