Question

obtainan expression for potential gredient in term of resistivity of wire​

Answer 1

Answer:

Let V be the potential difference across certain portion of the wire, whose resistance is R. If I is the current through the wire, then V = I R We know that R = ρ l A , where l, A and ρ are length, area of cross-section and resistivity of the material of the wire, respectively.

Answer 2

Answer:

Let V be the potential difference across certain portion of the wire, whose resistance is R. If I is the current through the wire, then V = I R We know that R = ρ l A , where l, A and ρ are length, area of cross-section and resistivity of the material of the wire, respectively.