For a plane slab of thickness

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

L

, cross-sectional area

A

and thermal conductivity

k

, which of the following gives its thermal resistance

R

? (a)

\dfrac{kA}{L}

(b)

\dfrac{Lk}{A}

(c)

2\dfrac{L}{kA}

(d)

\dfrac{L}{kA}