Electric Resistivity

# Electric Resistivity

• Electric Resistivity
• Summary
• What’s Next?

In the previous segment, we learnt about the Resistance of a conductor. In this segment, we will understand electric resistivity.

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## What is Electric resistivity?

• Resistivity is a factor in resistance that takes into account the nature of the material. It is a measure of how strongly a material opposes the flow of electric current.
• The resistance of a conductor is directly proportional to its length (l) and inversely proportional to its cross-sectional area (A). It also depends on the resistivity of the material (ρ).

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• If the material has low resistivity, its resistance will be lower. And if it has more resistivity, its resistance will be higher.
• Metals and alloys are good conductors of electricity since they have low resistivity.
• Non-metals like rubber and glass are bad conductors of electricity because of their high resistivity.

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• The following table gives an idea about the resistivity of different materials at 20°C.

## Related content

 More about Electricity Measuring Electric Current What is Electricity? Resistance of a Conductor Ohm’s Law – Part 2 Ohm’s Law – Part 1 Circuit Diagram Symbols Electric Potential Difference – Word Problem Electric Potential Difference Measuring Electric Current – Word Problem

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