Question

calculate the resistance of a wire 10m long that has a diameter of 2mm and resistivity of 2.63×10^-2oham meter​

Answer 1

$\huge \orange{ \boxed{\huge \purple{ \boxed{\huge \green{ \boxed{\huge \red { \underline{{{ᴀ}}}} \huge \pink { \underline{{{ɴ}}}} \huge \purple { \underline{ \mathfrak{{{s}}}}} \huge \blue { \underline{{{ᴡ}}}} \huge \orange { \underline{{{ᴇ}}}} \huge \mathbb { \underline{{{ʀ}}}}}}}}}}$

resistivity = 6.28 x 10-7 Om

Diameter (d) = 0.4 mm

So, radius (r) = 0.4/2 = 0.2 mm

1 mm = 1/10 cm = 1/10 * 100 m = 10-3 m

Area (A) = Tr? = 3.14 x (10-3)2 = 3.14 x 10-6

m?

Length (L) = 10 m

Resistance (R) = 212

For further calculations, refer attachment. Hence, resistivity = 6.28 x 10-7 Qm