Question

5. A wire of length 3m and area of cross-section 1.7 x 10-6 m² has a
resistance of 3 x 10^-2ohm. Calculate resistivity.
Explain with steps ​

Answer 1

Answer:

1.7×10^-8

Explanation:

Given,

Resistance = 3×10^-2 ohm

Length = 3m

Area of cross-section = 1.7 x 10-6 m²

Resitivity = (Resistance×area)/length

= (3×10^-2 × 1.7 x 10-6)/3

= 1.7×10^-8 (answer)

Answer 2

Answer:

1.7 *10^-8

Explanation:

L=3M

A=1.7*10^-6

R=3*10^-2

Resitivity(α)=?

R=α*L/A

α=R*A/L

3*10^-2  * 1.7*10^-6  / 3=α

α=1.7 *10^-8

thank you

hope u got your ans

R=