baeniah02 baeniah02
  • 13-06-2019
  • Chemistry
contestada

what affects a material's resistance​

Respuesta :

jcherry99
jcherry99 jcherry99
  • 13-06-2019

Answer:

Explanation:

If you are using a wire made out of (say) iron the formula would be

R = k * L / (pi * r^2)

pi r^2 represents the cross sectional area.

L is the length of the wire.

k is the resistance constant for that material.

So, resistance is measured as

k which depends on the material. It is different for all materials. Copper Silver and Gold for example, all have different k values.

L is the length of the material

pi * r^2 is the area of a thin slice of this material.

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