ohmic

(adjective)

That which obeys Ohm's law.

Related Terms

Examples of ohmic in the following topics:

  • Ohm's Law

    • Ohm's Law states that current is proportional to voltage; circuits are ohmic if they obey the relation V=IR.
    • The many substances for which Ohm's law holds are called ohmic.
    • Ohmic materials have a resistance R that is independent of voltage V and current I.
    • In a true ohmic device, the same value of resistance will be calculated from R = V/I regardless of the value of the applied voltage V.
    • There are, however, components of electrical circuits which do not obey Ohm's law; that is, their relationship between current and voltage (their I–V curve) is nonlinear (or non-ohmic).

  • Resistance and Resistivity

    • A meter-long piece of large-diameter copper wire may have a resistance of 10−5 Ω, and superconductors have no resistance at all (they are non-ohmic).