Question

plz tell this answer ​

Answer 1

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${\large{\purple{\mathbb{ANSWER}}}}$

${\large{\blue{\boxed{Wire\:\:P\:\:And\:\:S}}}}$

☆ Here,

We know that,

Resistance (R) = rho(r)×l/A

Therefore,

☆ Resistance of P:-

${\large{\red{\boxed{=\:r×l/A}}}}$

☆ Resistance of Q:-

${\large{\red{\boxed{=\:r×2l/A}}}}$

☆ Resistance of R:-

${\large{\red{\boxed{=\:r×l/2A}}}}$

☆ Resistance of S:-

= r × 2l/2A

${\large{\red{\boxed{=\:r×l/A}}}}$

Therefore clearly we can see that wire P and S have same resistance.

So P and S are the pairs of wire which have same resistance.

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