ElectricityResistance |
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).