Question

A wire has resistivity of 0.12ohms per m.
(a)Find the resistance of 25m of wire.

Answer 1

Answer:

First of all, this question is related to physics, not math.

And second, you have to mention the cross sectional area of the wire to calculate resistance because,

P = (R×A) /L

Where:

P = resistivity of the material in ohm-m (Ω-m)

R = resistance of the material in ohms (Ω).

L = length of the material in meters (m).

A = cross-sectional area of the material in square meters (m^2).