A copper wire has a resistance of \( 0.60 hm \). Anozner copper wire of the samemass as the first one is dou ble in length of the first. Find the resistance of the second wire.

Question

A copper wire has a resistance of \( 0.60 hm \). Anozner copper wire of the samemass as the first one is dou ble in length of the first. Find the resistance of the second wire.

A copper wire has a resistance of \( 0.6 0hm \). Another copper wire of the same mass as the first one is double in length of the first. Find the resistance of the second wire.

Monjur Alahi

9 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

We know that R = ρl/A

R ∝ l

R₁/R₂ = l₁/l₂

Given

∵ l₂ = 2l₁

R₁ = 0.60 hm

R₂/R₁ = l₂/l₁

R₂/R₁ = 2l₁/l₁

R₂ = 2 R₁

R₂ = 2 x 0.60

R₂ = 1.2 hm

9 views Answered 2023-02-05 15:29