2007-03-19 13:35:09 · 5 answers · asked by armenharoutunian 2 in Science & Mathematics ➔ Engineering
Ohm's Law states that for conductors build of certain materials (called ohmic materials) the current circulating through the conductor is directly proportional to the voltage applied to the conductor's terminal. The proportionality constant is 1/R, where R is called the resistance of the conductor.
As stated, this law is valid for certain materials, in a certain range of temperature, voltage, current and other conditions
2007-03-19 14:02:07 · answer #1 · answered by javier S 3 · 0⤊ 0⤋
It is the basis behind the relationship between potential and kinetic energy. Voltage is potential and current is kinetic. The conservation of energy uses ohms law in many different forms other than electricity. Heat has properties that are ohms law-like. Heat energy passes through material, almost like electrons would. Different materials pose a resistance to the heat exchange. Some materials conduct heat very well. You will have a heat loss or drop where there is a change in conductivity. Insulation has what's called an "R value", and the higher the R the more it insulates and blocks heat exchange from one side of it to the other, just like a resistor.
2007-03-19 15:08:30 · answer #2 · answered by joshnya68 4 · 0⤊ 0⤋
Ohm's law states the relationship between Voltage, Resistance, and Current in a circuit.
2007-03-19 13:38:50 · answer #3 · answered by Cronides 5 · 0⤊ 0⤋
Well in a DC Direct Current application, ohms law is both a principle and a formula that allows one to calculate what voltage and or current will be at any point in that circuit. It will also allow you to calculate things like power and heat dissipation given the values and tolerances of the chosen components. Most importantly it will allow you to calculate the most suitable components prior to trial and error, ie by having a circuit fail because you have placed one component with and unsuitable rating for is purpose.
2007-03-19 14:05:39 · answer #4 · answered by ? 5 · 0⤊ 0⤋
Ohm's Law states that it takes 1 volt to push 1 ampere of current through 1 Ohm of resistance.
From this it is obvious that if you want more current to flow it takes more voltage to push it. Likewise if voltage stays the same and resistance goes up, then current flow will decline.
2007-03-23 10:34:58 · answer #5 · answered by short5641sweet 3 · 0⤊ 0⤋