Answer:

Explanation:
The resistance is given as

Where A IS Cross sectional area of wire
therefore resistivity \rho can be wrtten as

Putting all value to get resistivity value

Sorry Man If you ask this question no one wants to write an essay and waste their time. You are smart enough to write an essay.
Answer:
Water droplets acts as tiny prism in the sky. The sunlight when enters these tiny droplets undergo internal reflection and also refract these rays which are dispersed causing a band of seven colors called rainbow.
Explanation:
The answer is control variable