Question

material and B have a resistivity of 2.2 into 10 to the power of minus 8 ohm metre and 10 into 10 ^ 8 respectively what is the nature of a and b​

Answer 1

Answer:

a is metal

b is insulator

Answer 2

Material A is conductor and material B is insulator

Explanation:

We have given two material A has resistivity $2.2\times 10^{-8}ohm-m$ and B has resistivety of $10\times 10^8=10^9ohm -m$

As the resistivity of material  A is very low so it will less oppose the flow of electron so high current will flow through material A so it is conductor

And material B has high resistivity so it will highly oppose the flow of current so less current will flow through material B

So it is insulator

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