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V = I*R

R = V/I

If we fix the voltage at 1 then

R = I^-1

The change in the resistance scale is the derivative

R dr = I^-1 di

R dr = -I^-2

R dr = -1/(I^2)

Explanation:

The change in the resistance measurement decreases by the inverse of the current squared.

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11y ago
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13y ago

It isn't linear The meter deflection is linear but the marked scale is logarithmic.

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Q: Why the scale of an ohm meter is non linear?
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is ohm s law true for all conductors?

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!


What is linear loads and nonlinear loads?

Linear load : Linear load gives straight line response. Non linear load:Non linear load gives distorted responseAnswerA linear load obeys Ohm's Law, whereas a non-linearload does not. 'Linear loads' are also called 'ohmic' loads, and 'non-linear' loads are also called 'non-ohmic' loads. For a load to obey Ohm's Law, the ratio of its voltage to current MUST remain constant for variations in voltage. This is comparatively rare, so most loads do not obey Ohm's Law. To quote one internationally-acclaimed MIT professor, "Ohm's Law is a fake (law)!"This tells us that Ohm's Law is NOT a universal law, and it's worth querying why it's a considered to be a law at all, and whether there's any point in teaching it. The equation, R = V/I, which is often 'claimed' to represent Ohm's Law actually does not, and is derived from the definition of an ohm, and NOT from Ohm's Law.


Is zener diode a linear device?

Zener diode is not a linear device... it is non-linear one. Since linear devices are those devices which have linear characteristics(V-I CHAR.), or follows the Ohm's law i.e. voltage is directly proportional to current. but in case of Zener diode ohm's law fails down. the V-I char. in both forward biased & reverse biased condition is non-linear. So. Zener diode is non-linear device


State the imitation of ohm's law?

imitation of ohms law is that it can be applied only to linear devices it cannot be allowed to non linear devices...


What is a linear resistor?

which obey ohms law ANSWER: Not all potentiometers are linear some are made to follow a logarithm function some follows an exponential function. A linear potentiometer will have a linear curve. Materials that obey Ohm's Law are called 'linear' or 'ohmic'; those that don't are called 'non-ohmic' or 'non-linear'.

Related questions

What type of meter shows reading on a non-linear scale?

-- analog ohm-meter -- analog power meter -- analog audio level meter -- slide-rule multiplication/division scales -- slide-rule tangent/cotangent scales -- analog tuning dial on an AM radio


Is ohm law true for all conductors?

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!


What observation about the current in a metal conductor was the basis for Ohm's law?

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.


What are the 5 parts of a Volt Ohm Meter?

Test Prod Scale meter Zero corrector Zero Ohms adjust Scale selector


is ohm s law true for all conductors?

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!


Ohms law is applicable to linear circuit means what?

You cannot apply ohm's law to non-linear devices. This is because, the non-linearity introduces different V-I characteristics which cannot be answered by mere Ohm's law.


What are the conditions under which ohm's law is obeyed?

When you are using semi conductors or the conductor is at a very high temperature.AnswerOhm's Law is not a universal law, and only applies to a limited range of conductors. For Ohm's Law to apply, the ratio of voltage to current must remain constant for variations in voltage; if the ratio varies, then Ohm's Law does not apply. Materials for which Ohm's Law applies are called 'linear' or 'ohmic'; those for which it doesn't apply are called 'non-linear' or 'non-ohmic'. There are far more 'non-linear' materials than there are 'linear'; these include the metal tungsten, electrolytes, gases, and semiconducting devices, such as diodes, etc.The ratio of voltage to current is termed 'resistance', and applies to both linear and non-linear devices. However, the equation, R = E/I, does NOT represent Ohm's Law; it is derived from the definition of the ohm. This equation applies for both linear and non-linear devices. But, for non-linear devices, it only applies at a particular voltage, as the ratio varies with changes in voltage.


What is linear loads and nonlinear loads?

Linear load : Linear load gives straight line response. Non linear load:Non linear load gives distorted responseAnswerA linear load obeys Ohm's Law, whereas a non-linearload does not. 'Linear loads' are also called 'ohmic' loads, and 'non-linear' loads are also called 'non-ohmic' loads. For a load to obey Ohm's Law, the ratio of its voltage to current MUST remain constant for variations in voltage. This is comparatively rare, so most loads do not obey Ohm's Law. To quote one internationally-acclaimed MIT professor, "Ohm's Law is a fake (law)!"This tells us that Ohm's Law is NOT a universal law, and it's worth querying why it's a considered to be a law at all, and whether there's any point in teaching it. The equation, R = V/I, which is often 'claimed' to represent Ohm's Law actually does not, and is derived from the definition of an ohm, and NOT from Ohm's Law.


Is zener diode a linear device?

Zener diode is not a linear device... it is non-linear one. Since linear devices are those devices which have linear characteristics(V-I CHAR.), or follows the Ohm's law i.e. voltage is directly proportional to current. but in case of Zener diode ohm's law fails down. the V-I char. in both forward biased & reverse biased condition is non-linear. So. Zener diode is non-linear device


What are the problems with Ohm's law?

The main problem is that, despite its name, it is not really a 'law'! It applies to very few materials (called 'ohmic' or 'linear' materials). The vast majority of materials (called 'non-ohmic' or 'non-linear') simply do not obey Ohm's 'Law'!


Can Norton's theorem be applied to network which contains non linear resistance?

yesAnswerNo it cannot, any more than Ohm's Law can be applied to circuits with non-linear elements.


State the imitation of ohm's law?

imitation of ohms law is that it can be applied only to linear devices it cannot be allowed to non linear devices...