To make a solenoid, you need a hollow cylinder, a battery and lots of conducting wire. The wire must be wound dozens of times around the cylinder, with both ends connected to a battery. This allows the current to flow, replicating the effect of a bar magnet.Know More
Determine the size of your solenoid, and arrange for materials accordingly. For a hollow cylinder, arrange for something similar to the cardboard of a toilet roll. Length of the conducting wire should be adequate for three to four dozen winds around the cylinder. Get a battery of an appropriate voltage. In this case, a 5-volt should work fine.
Wind the conducting wire in tight, close packing around the cylinder around 40 to 50 times. The ends of the wire should be left loose to connect to the battery.
Attach one end of the wire to the positive and one end to the negative terminal of the battery. To test the solenoid, lower a piece of conducting metal or a magnet into the cylinder. Due to the induced magnetic field of the solenoid, the metal piece or magnet should be seen moving inside the cylinder.
According to the MIT School of Engineering, a battery provides an electrical charge due to the chemical reactions that take place inside it once it is connected into an electrical circuit. When a circuit connects the positive and negative poles, the anode and cathode inside the battery react with the electrolyte medium separating the two, producing a flow of electrons. This creates an electrical current and provides power.Full Answer >
To make your own sump pump battery backup for your home, you need a battery and an inverter. Pre-made sump pump backup systems are available for purchase, but you can make a homemade battery backup if plugging into a generator is not an option. Since you are working with electricity, be sure to take the same safety precautions as with any electrical project.Full Answer >
The resistance of a typical conducting wire is low when temperature is low and high when temperature is high. The increase in resistance alongside temperature is due to an increase in energy of the wire atoms, which cause them to vibrate more and impede the path of the electrons flowing through.Full Answer >
A current-carrying wire is not electrically charged because there are as many electrons as protons in the wire. As electrons flow in from one side, they flow out from the other, leading to no buildup of charge.Full Answer >