Question

Hay mate can you help me to find answer of these questions PLEASE!!! ​

Answer 1

Answer:

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Explanation:

1.Can u tell what is meant by R and P

2.Resistivity definition:

The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m). It is commonly represented by the Greek letter ρ, rho. Although the SI resistivity unit, the ohms metre is generally used, sometimes figures will be seen described in terms of ohms centimetres, Ω⋅cm.