Calculate Resistivity Of Material Of Wire Long 4mm Diameter And Having Resistance Of Ohm

calculate the resistivity of the material of the wire 1.0m long,0.4mm in diameter and having a resistance of 2.0 ohm.

Answers:

Resistance=2 ohm

Length=1m

Diameter=4 mm =4/1000=0.004m

Radius=diameter/2=0.004/2=0.002m

Resistance = resistivity×length/area

2 = resistivity×1/0.002

2×2/1000=resistivity

4/1000=resistivity

0.004= resistivity