Question

A wire carries a current of 0.5A when a potential difference of 1.5V is applied across it. when is its resistance​

Answer 1

$\huge \fbox \green{Answer}$

Wire with current 0.5 A

And potential difference 1.5V

Now we know V=IR

So R = V/I

R= 3

Conductance = 1/3

=> 0.333 ohm inverse or mho.

Wire of length = 3m

Area = 5.4 m2

Resistance = 3ohm

So r = rho 3/5.4

3 = rho 3/5.4

Hence rho = 5.4

So conductivity = 1/5.4

Hope it will help you.

Answer 2

Reger the given attachment.

Khadijah21