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Ohm’s law is applicable for

Ohm’s law is applicable for Correct Answer Conductors only

Ohm’s law:

Ohm’s law states that at a constant temperature, the current through a conductor between two points is directly proportional to the voltage across the two points.

Voltage = Current × Resistance

V = I × R

V = voltage, I = current and R = resistance

The SI unit of resistance is ohms and is denoted by Ω.

It helps to calculate the power, efficiency, current, voltage, and resistance of an element of an electrical circuit.

It an element follows the ohm’s law, then the element is known as a linear element.

Ex: Resistor

Limitation of ohm's Law:

  • Ohm’s law is applicable for conductors only.
  • Ohm’s law does not apply to unilateral networks. Unilateral networks allow the current to flow in one direction. Such types of networks consist of elements like a diode, transistor, etc.
  • Ohm’s law is also not applicable to non - linear elements. Non-linear elements are those which do not have current exactly proportional to the applied voltage that means the resistance value of those elements changes for different values of voltage and current. An example of a non-linear element is a thyristor.
  • Ohm’s law is also not applicable to vacuum tubes.

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Note: Basically semiconductors material or device have non-linear or unilateral property.

Related Questions

Consider the following statements.
1. Ohm's law is not applicable at very low and very high temperature.
2. Ohm's law is applicable to semiconductor.
3. Ohm's law is not applicable to electron tubes, discharge tubes and electrolytes.
4. Conductance is the reciprocal of resistance and ismeasured in siemens.
Which of the statements given above are correct?
Consider the following statements 1. Ohm’s law holds good when the temperature is changed. 2. Ohm’s law holds when the temperature of the conductor remains constant. 3. Ohm's law is an assumption that current through a conductor is directly proportional to the potential difference applied to it when temperature is constant. Which of the following statements is INCORRECT?
Nodal method of circuit analysis is based on a) KVL and Ohm’s law b) KVL, KCL and Ohm’s law c) KCL and KVL d) KCL and Ohm’s law Which of the following options is correct?
A 2-port network is driven by a source Vs = 100 V in series with 5 ohm, and terminated in a 25 ohm resistor. The impedance parameters are The Thevenin equivalent circuit presented to the 25 ohm resistor is
In the bridge shown, Z1 = 300 ohm, Z2 = 400 – j300 ohm, Z3 = 200 + j100 ohm. The Z4 at balance is
Consider the following statements: (a) Tellegen’s theorem is applicable to any lumped networks (b) The reciprocity theorem is applicable to linear bilateral networks (c) Thevenin’s theorem is applicable to two - terminal linear active networks (d) Norton’s theorem is applicable to two - terminal linear active networks Which of the above statements are correct?
Statement A: Ohm's law is not valid for some conditions of voltage and current. Statement B: There do exist materials and devices used in electric circuits where Ohm's law is not valid.
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer:
Assertion (A): Austinian theory of law does not properly explain constitutional law, customary law and judicial precedents.
Reason (R): Constitutional law, customary law and judicial precedents do not share the same pedigree as statutory law.
Read assertion (A) and Reason (R) and give the correct answer with the help of given below:
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Reason (R ): The muslim person law (shariat) application act, 1937 has abrogated the customs and restored to muslims their own personal law in almost all cases
Georg Simon Ohm in whose honour we have the famous Ohm’s Law, hailed from which country?