Question

Two wires of same material and same length have radii 1mm and 2mm respectively.compare their resistance and specific resistance.

Answer 1

Answer:

radius of 1st wire is 1mm

radius of 2nd wire is 2mm

$r \alpha \frac{1}{area}$

then

$r \alpha \frac{1}{r}$

hence Resistance of 2nd wire is lesser than 1st wire.

where as Resistivity of wire remains unaltered as the two wires of same material

Answer 2

Step-by-step explanation:

Therefore the ratio of their resistances is 4 : 1

as two wires are made of the same material, so specific resistances of both wires are same