anonymous
  • anonymous
Answer the following: i) Define resistivity of a material. ii) Draw the voltage-current graph for ohmic and non-ohmic materials. iii) Give examples of ohmic and non-ohmic materials.
Physics
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
(Physics / General Physics) the electrical property of a material that determines the resistance of a piece of given dimensions. It is equal to RA/l, where R is the resistance, A the cross-sectional area, and l the length, and is the reciprocal of conductivity. It is measured in ohms. Symbol ρ Former name specific resistance.
anonymous
  • anonymous
It is the resistance offered by a meter cube of the material when the current flows in a direction perpendicular to the opposite faces..

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