Physics, asked by Zombies, 1 year ago

Two pieces have been cut from a long wire. The ratio of their length is 3:1 what is the ratio of the resistance?

Answers

Answered by RaunakRaj

The ratio of resistance will also be 3:1 because resistance is directly proportional to length..

Let resistivity be x and area be y. Both resistivity and area will be same in both the wires as both of them hace been cutted down from same wire.
So,
R1=xL1/y
R2=xL2/y

So, R1/R2=L1/L2
as all other things canceled out.
so, R1:R2=L1:L2=3:1

RaunakRaj: also try short methods. Why to long and waste time?

RaunakRaj: but if u want then you can take resistivity be x and area be y. So both the thing will be same in both wires as they have been cutted down from same wires

Answered by realsolutionindia

The ratio of resistance will also be 3:1 because resistance is directly proportional to length..

Let resistivity be x and area be y. Both resistivity and area will be same in both the wires as both of them hace been cutted down from same wire.

So,

R1=xL1/y

R2=xL2/y

So, R1/R2=L1/L2

as all other things canceled out.

so, R1:R2=L1:L2=3:1

Read more on Brainly.in - https://brainly.in/question/1214595#readmore

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