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All other things being equal, current will be larger in a wire that has a larger value of All other things being equal, current will be larger in a wire that has a larger value of:______

a. conductivity.
b. resistivity.
c. the coefficient of current net charge.
d. potential.

Respuesta :

cjrodriguez89

Answer:

a) conductivity

Explanation:

  • Assuming the wire obeys Ohm's Law, for a given voltage, in order to have a larger current, the resistance must be lower.
  • The resistance of a resistive element is given by the following equation:

        [tex]R = \rho * \frac{L}{A}[/tex]

  • If geometric parameters keep the same, the only choice to lower the resistance value is diminishing the resistivity ρ.
  • The resistivity, indeed, is defined as the inverse of the conductivity, σ.
  • So, if resistivity decreases, conductivity increases.
  • So, in order to have a larger current, all other things being equal, the wire must have a larger value of conductivity.
  • The option a) is the right one.

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