Electrical resistivity is a fundamental property that quantifies the force with which a given material resists. Resistivity is measured by ohmSO. Electrons often encounter semi- or non-conductive materials that cause resistance. A low resistivity indicates a material that easily allows the flow of electrical current. Electrical conductivity itself is the movement of electrically charged particles. Often in metals the conductivity varies in the presence of the valence electron. Valence electrons are found on the outer shell of an atom and are free to move. Since the valence electron is free of any type of movement, it can travel along the lattice that forms the structure of a metal. The most efficient metal in terms of speed is the one whose physical property is a SINGLE valence electron. Some examples are Gold, Copper and Silver. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay An electrical circuit is a ring of electrical elements joined together. Professional engineers often use symbols to illustrate a circuit. Some elements included in a common circuit are sources, capacitors, inductors, and so on. A common power source is called a battery. Batteries store electricity in a chemical state within a closed energy system. Some batteries can be recharged and reused. An advantage of using battery over renewable energy is that renewable energy depends on the force of nature, while the battery develops constant generation of energy. Additionally, batteries are a more reliable source in case of an emergency where power provided by a generator is not applicable. The battery is an important part of modern man and he often doesn't realize it! Without the battery, there would be no laptop, phone, watch, or any other device not plugged into the wall outlet. The battery is now 200 years old. There are many types of batteries, all for a particular use. A capacitor is often used to store energy such as a relay system. They are usually used in speakers in the subwoofer since the woofer requires strong energy pulses. Of course, any living, breathing, or moving object depends on one fundamental property: energy. Every time someone moves or changes energy is the root of it. Energy moves cars, heats our homes, lights rooms and provides a place to cook. One form of energy can always be changed into another form. A simple example is that when the sun shines on the earth, light energy is converted into heat energy. When we turn off a flashlight, for example, the chemically stored energy is converted into light energy. The heart of all energy originates from the great star around which the earth orbits: the sun. This simple fact may be hard to believe, but in reality the sun's energy is only stored in a “dormant” form in a physical object such as batteries or gasoline, and when such physical objects are consumed it is usually by burning them. The conductivity of a solution changes as salinity is added or decreased is actually a fairly simple term. Sodium is an excellent conductor and so when salt, a material with high amounts of sodium, is mixed with a solution it drastically improves the conductivity. This concept may be small but it is very important. Most freshwater animals can only survive within a certain salinity range. If this level changes, they could die. Salinity is usually measured in PPT (parts per thousand) or, in the case of measurement, in grams per liter. For example, sea water contains.