Question

एक तार की लम्बाई 2 मीटर तथा त्रिज्या 2 मिमी है। यदि धातु तार की विशिष्ट प्रतिरोधकता 5x10^-8
ओम-मीटर है तो तार का प्रतिरोध ज्ञात कीजिए ।​
Ask for details Follow Report by

Answer 1

Answer:

gckcjhvld4nufobo4fnuob49fb4oubdoyb4odubrovdoyrvhodveovxoevoxevo

Answer 2

The resistance of the wire is $R=7.95\times 10^{-3}\ \Omega$.

Explanation:

Given that,

Length of the wire, l = 2 m

Radius of the wire, r = 2 mm = 0.002 m

Resistivity of the wire, $\rho=5\times 10^{-8}\ \Omega-m$

To find,

The resistance of the wire.

Solution,

The resistance of a wire in terms of length and area is given by :

$R=\rho\dfrac{l}{A}$

$R=\rho\dfrac{l}{\pi r^2}$

$R=5\times 10^{-8}\times \dfrac{2}{\pi (0.002)^2}$

$R=7.95\times 10^{-3}\ \Omega$

So, the resistance of the wire is $R=7.95\times 10^{-3}\ \Omega$.

Learn more,

Resistance

https://brainly.in/question/7549219