A wire of length 100cm and cross-sectional area of 2.0 x 10-3cm2 has a resistance of 0.10 Ω. Calculate its electrical conductivity.

Temmy2009

3 years ago

l=100cm
A=0.002cm²
R=0.10ohms
P=?
Since R=PL/A
0.10=P×100/0.002
100p/100=0.0002/100
p=0.000002
since conductivity=1/p
conductivity =1/0.000002=500,00
=5.0×10⁵ohms-¹cm-¹

3BYKE

4 years ago

they asked for electrical conductivity not resistivity, so u have to find the inverse of ur answer in resistivity, the answer is option E

ANNYODG

11 months ago

The Answer isnt there

BoluVictory

2 years ago

It is correct 100%

Dave333

4 years ago

Is the formula not:p=RA/l,
i.e,p=2.0x10^-3 X 0.10/100

Dave333

4 years ago

The answer is 2.0x10^-6.@my School,rectify this

covenant8919

3 months ago

No answer

franchis

4 years ago

Myschool is correct. Conductivity=1÷resistivity

Henriz

4 years ago

Very correct 5×10^5Ωm