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Take a hose and point it at a waterwheel like the ones that were used to turn grinding stones in watermills.
Electrical relationships. There is no one unique way of doing this. In an electrical system power p is equal to the voltage multiplied by the current. All materials are made up from atoms and all atoms consist of protons neutrons and electrons. Ohm unit of resistance one ohm is the resistance offered to the passage of one ampere when impelled by one volt.
For more information on electrical conductivity there is a direct relationship between temperature and conductivity because temperature can influence the dissolution of mineral salts. Relationship between voltage and current. The impedance analogy and the mobility analogy. In fact electric current is the rate of the electric charge of those electrons because we are concerned about the electric charge not the numbers corresponding to electrons.
If 6 241 10 18 electrons move through a wire in 1 sec i e if these many electrons pass a given cross section of a wire during a 1 sec period the electric current is 1 amp 1 a. Numerous analogies are theoretically possible but there are two analogies that are widely used. You can increase the power generated by the waterwheel in two ways. The fundamental relationship between voltage current and resistance in an electrical or electronic circuit is called ohm s law.
Current and voltage are two fundamental quantities in electricity voltage is the cause and current is the effect. Common electrical units used in formulas and equations are. The voltage between two points is equal to the electrical potential difference between those points. Electrical engineering is an engineering discipline concerned with the study design and application of equipment devices and systems which use electricity electronics and electromagnetism it emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph the telephone and electrical power generation distribution and use.
Ohm s law defines the relationship between the voltage current and resistance in an electric circuit. The current is directly proportional to the voltage and inversely proportional to. The water analogy still applies. During the eighteenth and nineteenth centuries a great deal of research was directed toward discovering the link between electricity and magnetism.
Ampere units of current one ampere is the current which one volt can send.
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