Thin wires have a greater electrical resistance than a thick wire
Explanation:
The electrical resistance of a wire is given by
[tex]R=\frac{\rho L}{A}[/tex]
where
[tex]\rho[/tex] is the resistivity of the material
L is the length of the wire
A is the cross-sectional area of the wire
From the equation, we notice that:
This means that the larger the cross-sectional area (so, the thicker the wire), the less the resistance, and the smaller the cross-sectional area (so, the thinner the wire), the larger the resistance.
Therefore, the correct sentence is:
Thin wires have a greater electrical resistance than a thick wire.
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