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All circuits follow Ohm's law, without exception. If it appears that it is not, then you are not accounting for some particular factor of that circuit, such as dynamic resistance.
Ohm's Law states that resistance is voltage divided by current. This is the formal definition of the ohm. This holds true in every case, not matter what. What throws people off is the fact that resistance is not constant, particularly in diodes and transistors, but even in ordinary resistors, due, in that case, to something called temperature coefficient. Take an ordinary 40 W light bulb for instance. It has a cold resistance of about 27 ohms, but a hot resistance of 360 ohms. Does it comply with ohm's Law? Yes, indeed, it does! You just have to take the specific circumstances into account.
Ohm's law does not say that resistance is constant; it says that resistance is voltage divided by current. Understand that and learn.
Answer
I completely disagree with the above answer. While the ratio of voltage to current will always indicate the resistance (which is how resistance is defined, NOT Ohm's Law!) for that particular ratio, Ohm's Law only applies when that ratio remains constant over a range of voltage variation. There MUST be a straight-line relationship between voltage and current for Ohm's Law to apply -PERIOD! For this reason, a tungsten lamp's filament, which produces a curved-line graph, does NOT obey Ohm's Law.
Ohm's Law applies to so few materials and devices, that one questions why it is still being taught as a 'law'!
What else can I help you with?
What are linear and nonlinear circuits?
Linear (Straight) circuit: An electronic circuit where the info sinusoidal flood of recurrence f give a stead state yield. This circuit take after ohms law and the estimation of electronic parts doesn't change with the level of voltage of current in the circuit. Non-Linear (Non direct) circuit: The circuit in which the parameters change as for current and voltage. The parameter esteem like resistance, capacitance, inductance, waveform, recurrence and so on, is not consistent. This circuit doesn't take after ohms law and the v-i attributes are not a straight line.
Why does A.C. not follow OHM's law?
Resistors in A.C circuits completely, absolutely and totally follow ohms law. Ohm's law is followed by resistances and has nothing to with the alternating or direct nature of current. Ohm's law is however not followed by non linear loads. Also, in A.C systems we generally write V=I*Z which is analogous to V=I*R in D.C circuits. For capacitive and inductive circuits the current magnitude varies in accordance with the circuit impedance but there is a phase shift corresponding to the lagging/ leading nature of current. Conclusion: it's absolutely wrong to say that ohm's law is not followed in A.C. Its as much applicable to AC systems as to DC systems.
How do you calculate 1.67 ohms?
ohms law.
Is ohms law heat and light?
No.
Do transformer violates ohms law?
no
Will superconductivity make ohms law obsolete?
Most certainly not, resistance plays important role in electronic circuits, it is not just a burden.
What are linear and nonlinear circuits?
Linear (Straight) circuit: An electronic circuit where the info sinusoidal flood of recurrence f give a stead state yield. This circuit take after ohms law and the estimation of electronic parts doesn't change with the level of voltage of current in the circuit. Non-Linear (Non direct) circuit: The circuit in which the parameters change as for current and voltage. The parameter esteem like resistance, capacitance, inductance, waveform, recurrence and so on, is not consistent. This circuit doesn't take after ohms law and the v-i attributes are not a straight line.
Do transistors follow ohm's law?
As transistors are made of semiconductors, they do notfollow Ohm's law.A: they cannot follow exactly ohms law since they are themselves no linear active devices
Why does A.C. not follow OHM's law?
Resistors in A.C circuits completely, absolutely and totally follow ohms law. Ohm's law is followed by resistances and has nothing to with the alternating or direct nature of current. Ohm's law is however not followed by non linear loads. Also, in A.C systems we generally write V=I*Z which is analogous to V=I*R in D.C circuits. For capacitive and inductive circuits the current magnitude varies in accordance with the circuit impedance but there is a phase shift corresponding to the lagging/ leading nature of current. Conclusion: it's absolutely wrong to say that ohm's law is not followed in A.C. Its as much applicable to AC systems as to DC systems.
Is ohms law verified for the open circuits?
Ohm's Law is not applicable to open circuits because there is no current flow. Ohm's Law specifically describes the relationship between voltage, current, and resistance in a closed electrical circuit.
Who are the contributors of ohms law?
Georg Simon Ohm in a book on electricity published in 1827, and Gustav Robert Kirchoffin "Laws of Closed Electric Circuits" in 1845.
How do you calculate 1.67 ohms?
ohms law.
What are the limitations of ohms law?
It requires the ability to multiply and divide. It requires the ability to mentally separate voltage from current and to understand resistance and when to add resistance for series circuits and worse identify and calculate parallel loads.
How do you find conductance using ohms law?
To find the conductance using ohms law,you take the inverse of the resistance(/R)
What does the i stand for in ohms law?
Current
Is ohms law heat and light?
No.
Do transformer violates ohms law?
no
