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I is the current ( Amps) in the Ohm`s Law formula; V= I*R
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ohmic conductor does obey ohm 's law.
non ohmic conductor does not obey ohm's law.
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Wolfgang Ohm has written:
'Die anerkannte Aussperrung' -- subject(s): Law and legislation, Strikes and lockouts
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They're not! The relationship you describe is derived from the definition of the ohm, not from Ohm's Law. This tells us that resistance is equal to the voltage divided by the current.
Ohm's Law merely tells us that the ratio of voltage to current is constant for variations in voltage -which, unfortunately, is not actually true. In other words, Ohm's Law is not true!
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Everything obeys Ohm's law - antennas, cables, transformers, integrated circuits, etc.
AnswerIt is not true that 'everything' obeys Ohm's Law. For a device to obey Ohm's Law, the ratio of voltage to current MUST remain constant for variations in voltage. This is why Ohm's Law is a law of constant proportionality.1 answer
Ohm's law says that voltage is equal to current times resistance.
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There is no equation for Ohm's Law. Ohm's Law simply tells us that, for ohmic or linear materials, the ratio of voltage to current is a constant.
The equation you are, presumably, looking for is derived from the definition of the ohm, not from Ohm's Law, and that is resistance is voltage divided by current.
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The ohm is a measure of electrical resistance. It was named for the German physicist Georg Ohm.
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There is no 'point on a graph' which represents Ohm's Law. It's the shape of the graph that determines whether Ohm's Law applies.
If a graph is drawn showing the resulting variation in current for changes in voltage then, for Ohm's Law to apply, the graph must be a straight line.
If the resulting graph is not a straight line, then Ohm's Law doesn't apply.
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Ohm's law is applicable to all electrical circuits.
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The formula in getting the energy ohm's law is V = IR.
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The law was named after the German physicist Georg Ohm who, in 1827, described measurements of applied voltage and current through simple electrical circuits containing various lengths of wire.
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Ohm's law is I=E/R
I= current
E= Voltage
R=resistance
so yes they are related to each other using OHM'S LAW
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He did not come up with the Ohm, it was named after him many years after his death.
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For Ohm's Law to apply to a conductor, the ratio of voltage to current must remain constant for changes in voltage.
If the ratio changes when the applied voltage changes, then Ohm's Law does not apply.
It's as simple as that!
Conductors or devices to which Ohm's Law applies are termed 'linear' or 'ohmic'; those to which Ohm's Law does not apply are termed 'non-linear' or 'non-ohmic'. There are far more non-linear devices than linear devices, from which we can conclude that Ohm's Law is not an universal law.
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Are you talking about Ohm's Law. Voltage = (Current) x (Resistance). Georg Ohm
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Ohm's Law: V = I * R (Voltage = Current * Resistance) Watt's Law: P = V * I (Power = Voltage * Current)
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Ohm's Law has nothing whatsoever to do with power. Power is measured in watts.
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Ohm's Law.
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No. It only applies to a very limited range of conductors that are classified as being 'linear' or 'ohmic'. Most materials are 'non-linear' or 'non-ohmic', and these do NOT obey Ohm's Law. Non-linear conductors include tungsten and non-linear devices include diodes. For Ohm's Law to apply, the ratio of voltage to current must remain constant for variations in voltage; if it doesn't, then Ohm's Law doesn't apply. Period!
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You cannot 'verify' Ohm's Law with a series or parallel circuit. The only way of verifying Ohm's Law is to plot a graph of current against voltage for variations in voltage. If the resulting graph is a straight line, then you have verified Ohm's Law for the load you have used.
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Not all conductors obey Ohm's Law. There are certain materials, like semiconductors and diodes, that do not follow Ohm's Law due to their nonlinear behavior. An example of a conductor that obeys Ohm's Law is a resistor, where the current through it is directly proportional to the voltage applied.
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The equation you are looking for, R = E/I, is derived from the definition of the ohm, not from Ohm's Law. Ohm's Law is properly-called 'Ohm's Law of Constant Proportionality', which states that, for certain (linear) loads, the ratio of voltage to current is constant for changes in voltage. The above equation applies whether Ohm's Law does or does not.
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The 3 basic formulas for Ohm's Law are :
- V=IR
- I=V/R
- R=V/I
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ohm's law state that in an electric current it is propotional to current
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Ohms's law is the basics for all conductor designings........
AnswerOhm's Law hardly benefits us at all. It's not a universal law, and very few electrical materials/circuit components actually obey Ohm's Law. The fundamental equation, R = E/I, is derived from the definition of the ohm, so Ohm's Law hasn't even contributed that to electrical engineering.
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The name given to the law of resistance is Ohm's Law.
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Ohm's most important discovery was in 1826 when he discovered the mathematical law of electric current called Ohm's law.
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ans: Rowland's or Hopkinson's law..
flux, Φ =F/S = mmf /reluctance which is equivalent tocurrent, I= E/R = electric field/ resistance2 answers
Ohm's Law
Voltage = Current x Resistance
Resistance is part of Ohm's Law. Not sure why you think there is some violation of Ohm's law as it applies to resistance.
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Hardly any conductor or electrical component (e.g. diodes, etc.) obeys Ohm's Law. For Ohm's Law to apply, the ratio of voltage to current must remain constant for changes in voltages. In other words, if we were to plot current against voltage, for variations in voltage, then we should end up with a straight-line graph. But most conductors and devices produce curved-line graphs!
The reason for this is that Ohm's Law is simply NOT a 'law' in the sense of being 'universal'.
The equation, R = E/I, is actually NOT derived from Ohm's Law, but from the definition of the ohm.
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Unit measure for resistence is called as "OHM". Its law is called as "OHM'S LAW".
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The significance is that Ohm's Law - together with the two Kirchhoff's Laws - are used all the time to do all sorts of calculations in circuits.
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A tungsten filament does follow Ohm's Law at any instant of time. You may be confused in that the filament resistance changes from its "cold" state to its "hot" state. When cold the resistance is about 1/15 the resistance of what it is when the filament heats up, which happens very quickly. At any instant Ohm's Law holds. When the voltage is applied you have an initial current draw that exceeds the steady state current draw based on the change in resistance.
AnswerOhm's Law either applies, or it does not. It cannot apply 'at an instant of time' -a change in current is either proportional to a change in voltage, or it isn't!
A tungsten filament does not obey Ohm's Law, because the current flowing through the filament does not increase in proportion to the applied voltage. This is because the resistance changes due to the filament's increasing temperature as the applied voltage increases. This is why Ohm's Law specifies that current is proportional to voltage, provided the temperature remains constant.
Although tungsten doesn't obey Ohm's Law, the so-called Ohm's Law equation applies whether a circuit obeys Ohm's Law or not. This is because the formula is really derived from the definition of the ohm, and not from Ohm's Law itself, which makes absolutely NO reference to resistance!
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The simple answer is that it isn't! Ohm's Law applies to so few conductors and electrical devices that it hardly qualifies as a 'law' at all. For Ohm's Law to apply, the ratio of the voltage across a conductor (or any sort of load) to the current through that conductor must be constant for variations in voltage, and this occurs in very few conductors.
Many people, who should know better, mistakenly believe that the equation, R = V/I, represents Ohm's Law. This is incorrect, as the equation is derived from the definition of the ohm (being defined as a 'volt per ampere'), and not from Ohm's Law. This equation is universal, and applies in situations where Ohm's Law doesn't. For example, the ratio of voltage to current for a tungsten lamp changes as the voltage across the filament changes and, so, tungsten doesn't obey Ohm's Law. However, for any particular voltage, the resistance of tungsten AT THAT VOLTAGE can be determined by the equation.
Many scientists and engineers believe that Ohm's Law should be a law at all. A well-known MIT professor, for example, goes as far as to say that "Ohm's Law is a fake"! In my opinion, there doesn't seem to be any good argument for teaching Ohm's Law beyond its historical significance.
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Yes and no. At any instant they follow ohm's la. However as they are nonlinear, as signals change they deviate from the standard ohm's law that passive components follow at all times.
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For Ohm's Law to apply, the ratio of a conductor's (or device's) voltage to resistance MUST be constant for variations in voltage. In other words, if you plotted current against voltage, for variations in voltage, then the result MUST be a straight line. Ohm's Law does not apply at a particular instant.
Hardly any material or device obeys Ohm's Law, because most produce curved lines. Transistors do not obey Ohm's Law and is described as being 'non-linear' or 'non-ohmic'.
The equation, R = V/I, widely regarded as being 'Ohm's Law' is derived, NOT from Ohm's Law, but from the definition of the ohm.
There seems hardly any credible reason to continue teaching 'Ohm's Law' as a 'law', as it applies to so few materials.
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Ohm's Law describes the relationship between the voltage (potential difference) across the ends of some conductors and the resulting current through those conductors for variations in voltage. If the voltage is constant, then Ohm's Law is irrelevant.
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Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points, and inversely proportional to the resistance between them
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Ohm's Law: V = IR (voltage = current times resistance).
Ohm's Law: V = IR (voltage = current times resistance).
Ohm's Law: V = IR (voltage = current times resistance).
Ohm's Law: V = IR (voltage = current times resistance).
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The inverse of Ohm's law, which relates voltage, current, and resistance, can be expressed as ( I = \frac{V}{R} ) where ( I ) is current, ( V ) is voltage, and ( R ) is resistance. While Ohm's law itself was formulated by Georg Simon Ohm in the 19th century, the inverse relationship is a natural mathematical consequence of his original formulation. Therefore, it is not attributed to a specific individual but rather stems from the application of Ohm's law.
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