Question

tell me the ans of the following question​

Answer 1

Formula

➡ r = D / 2

➡area = πr^2

➡Resistivity = resistance × area / length

***

Follow Me

Answer 2

$\huge \boxed{ \underline{ \underline{ \bf{Answer}}}}$

GIVEN :

Resistance (R) = 2 ohm

Length of the conductor (l) = 10 m

Diameter of the conductor (d) = 0.4

Radius = 0.2 m.

TO FIND :

Resistivity of the conductor.

PROCESS :

We know,

$\implies \: \rho \: = \: \frac{R \times A }{l}$

$\implies \: \rho \: = \: \frac{R \times( \pi {r}^{2}) }{l}$

Now, putting the values we get,

$\implies \: \rho \: = \: \frac{2 \times 3.14 \times {(0.2)}^{2} }{10}$

$\implies \: \rho \: = \: 0.2 \times 3.14 \times 0.04$

$\implies \: \rho \: = \: 0.02512 \: \: \Omega\: m$

$\boxed{ \sf\therefore \: Our \: required \: \: Resistivity = \: 0.02512 \: \Omega \: m}$