Question

A 5m long wire has diameter 0.4.mm,if it's resistance is 10ohm . Calculate it's resistivity and conductivity​

Answer 1

Answer:

Given :   R=2Ω            l=1 m            d=0.4 mm =0.0004 m

Cross section area of wire       A=  

4

πd  

2

 

​  

=  

4

π×(0.0004)  

2

 

​  

=1.256×10  

−7

 m  

2

 

Resistivity of the material       ρ=  

l

RA

​  

 

∴   ρ=  

1

2×1.256×10  

−7

 

​  

=2.514×10  

−7

  Ωm

Explanation:

Answer 2

Answer:

Explanation:

.