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romanna [79]
4 years ago
13

Two copper wires have the same length but different cross sectional areas. The cross-sectional area of wire 1 is , and that of w

ire 2 is . How are the resistances of the two wires related
Physics
1 answer:
pentagon [3]4 years ago
8 0

Explanation:

We know that resistance

R= \frac{\rho L}{A}

clearly,

R∝ 1/A

Greater the area cross section area of the.

therefore,

\frac{R_1}{R_2} = \frac{A_2}{A_1}  =\frac{d_2}{d_1}^2

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