Physics
Grade-9
Easy
Question
Look at the following table.
The above table gives the resistivity of some common materials used as conductors at a fixed temperature. The worst conductor shown in the table is
- Silver
- Aluminum
- Manganin
- Nichrome
Hint:
Insulators have the highest resistivity.
The correct answer is: Nichrome
- Resistivity is a property of a material that is useful for comparing the current carrying capacity of the material.
- Higher the resistivity of a material, the higher the resistance provided to the current by that material.
- Resistivity is the resistance of a conductor across a unit cross-sectional area per length.
- It is denoted with the Greek letter 'rho' '
'.
- In the above table, Nichrome has the highest resistivity, thus it is the worst conductor.
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