The resistance per meter is 10 ohm. if the resistance of the material of the wire is 50 then 10^-8 ohm. find the area of cross section of the wire. the question is at some point wrong or missing a word please help me with the question and answer!

5×10⁻⁸ m²

Explanation:

I assume you mean the resistivity of the material is 50×10⁻⁸ Ωm.

R = ρL/A

10 Ω = (50×10⁻⁸ Ωm) (1 m) / A

A = 5×10⁻⁸ m²

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up