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What is the necessary condition for a conductor to obey Ohms Law?

The necessary conditions for a conductor to obey Ohm’s law are as follows – 

  1. The conductor should be ohmic.
  2. Both the temperature and the physical conditions of the conductor should be constant.

Related Questions:

  1. How do you find the resistance to Ohm's law?
  2. Why is the curve representing Ohm's law linear?
  3. Is resistance constant in Ohm's law?

Read More:

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CBSE CLASS XII Related Questions

  • 1.
    Write two advantages of reflecting telescope over refracting telescope.

        View Solution

      • 2.
        A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

          • 3.
            Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

              • \( (M_x - M_z)<M_y \)
              • \( (M_x - M_y)<M_z \)
              • \( M_x>(M_y + M_z) \)
              • \( M_x<(M_y + M_z) \)
              View Solution

            • 4.
              Derive an expression for the capacitance of a parallel plate capacitor of plate area A and plate separation d with air present between the plates.

                  View Solution

                • 5.
                  Two air-filled capacitors of capacitances $C_1$ and $C_2$ are connected in parallel with a dc battery. After the capacitors are fully charged, a slab of dielectric constant K is inserted between the plates of each capacitor. How will the (i) charge on each capacitor and (ii) energy stored in the capacitor affected after the slab is introduced.

                      View Solution

                    • 6.
                      An electric field $\vec{E}$ is established across the ends of a cylindrical conductor of length L and area of cross-section A. Discuss how electrons attain an average velocity, independent of time. Hence, obtain a relation between current in the conductor and this ‘average velocity’ of electrons.

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