What factors determine the amount of resistance of a conductor?

The resistance of a wire or other conductor depends upon the following:

  • The length of the conductor (the longer the wire, the more resistance).
  • The cross-sectional area of the conductor (the thinner, the more resistance).
  • The properties of the material (for metals, the fewer the number of free electrons, the more resistance).
  • The temperature of the conductor (for metals, the warmer, the more resistance; for carbon the cooler, the more resistance).


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