Live wires carry electric current toward a device, such as a main-powered appliance, while neutral wires carry electric current away from the device to close an electric circuit. Live wires are typically blue in color, while neutral wires are usually brown.Know More
An electric current refers to the movement of an electrical charge along a conductor. The amount of electrical flow depends on voltage and resistance, which is mathematically represented by the equation I = V/R, where I denotes electric current, V represents voltage and R indicates resistance.
In electrical appliances, three types of wires are commonly used for safety purposes, which include live, neutral and earth wires. When the appliance is in good working order, earth wires are not necessary. However, faulty live wires require earth wires to discharge a large amount of electric current.Learn more about Electricity
Lightning is caused by an electric current inside a thundercloud that connects with the ground beneath the cloud. Lightning occurs when tiny pieces of ice start bumping into one another as they travel through the air. The collisions of ice generate an electric charge inside the cloud.Full Answer >
Conductors are materials that allow the flow of electric current, whereas insulators do not. While conductors and insulators are different in that respect, their similarity is in their makeup of atoms. It is these atoms that either have room to float around to facilitate conduction or have little freedom to move around; this lack of freedom makes the material they form an insulator.Full Answer >
When photovoltaic cells are hit by sunlight, photons are absorbed, electrons are released and capturing those free electrons causes an electric current. Photovoltaic cells create a direct current (DC), which must be transformed into an alternating current (AC) for industry and home use. Photovoltaic systems rely on an inverter to accomplish this conversion.Full Answer >
A dynamo generates electricity by using a magnetic field to imbue wires with an electric current. According to the Edison Tech Center, this process generates a direct current that can then be fed down the wires to an alternator for conversion to an alternating current; these alternators are sometimes known as generators.Full Answer >