resistance coil

1 definition found

resistance coil - Collaborative International Dictionary of English v.0.48 :

  Resistance \Re*sist"ance\ (-ans), n. [F. r['e]sistance, LL.
     resistentia, fr. resistens, -entis, p. pr. See Resist.]
     1. The act of resisting; opposition, passive or active.
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              When King Demetrius saw that . . . no resistance was
              made against him, he sent away all his forces. --1.
                                                    Macc. xi. 38.
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     2. (Physics) The quality of not yielding to force or external
        pressure; that power of a body which acts in opposition to
        the impulse or pressure of another, or which prevents the
        effect of another power; as, the resistance of the air to
        a body passing through it; the resistance of a target to
        projectiles.
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     3. A means or method of resisting; that which resists.
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              Unfold to us some warlike resistance. --Shak.
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     4. (Elec.) A certain hindrance or opposition to the passage
        of an electrical current or discharge offered by
        conducting bodies. It bears an inverse relation to the
        conductivity, -- good conductors having a small
        resistance, while poor conductors or insulators have a
        very high resistance. The unit of resistance is the ohm.
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     Resistance box (Elec.), a rheostat consisting of a box or
        case containing a number of resistance coils of standard
        values so arranged that they can be combined in various
        ways to afford more or less resistance.
  
     Resistance coil (Elec.), a coil of wire introduced into an
        electric circuit to increase the resistance.
  
     Solid of least resistance (Mech.), a solid of such a form
        as to experience, in moving in a fluid, less resistance
        than any other solid having the same base, height, and
        volume.
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