The given equation relates the resistance \(R\), in ohms, of a wire t…

The given equation relates the resistance

R

, in ohms, of a wire to its length

ℓ

, in meters, and its cross-sectional area

A

, in square meters. Which equation correctly expresses the length, in meters, of the wire in terms of its resistance, in ohms, and its cross-sectional area, in square meters?

ℓ = \frac{A R}{0.45}

ℓ = \frac{0.45 R}{A}

ℓ = \frac{R + A}{0.45}

ℓ = \frac{R - A}{0.45}

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