Question

1. Calculate the resistance of a copper wire of length 2m and area of cross section 10
ºm?. Resistivity of copper is 1.7 x 10-8 ohm​

Answer 1

Answer:

Step-by-step explanation:

The formula for resistivity is:

Resistivity, ρ=R×Al

Here, Resistance, R=2×10−2Ω

Area of cross-section, A=1.7×10−6m2

And, Length, l=2m

So, putting these values in the above formula, we get:

ρ=2×10−2×1.7×10−62

=1.7×10−8Ωm

Thus, the resistivity of copper is 1.7×10−8 ohm-metre.

Answer 2

Sorry i don't know the answer.