Two wires of X & Y of same length and area of cross section made of different materials of resistivity ρ₁ & ρ₂ are connected in series to source of voltage V equation to valuate resistivity is *
ρ₁ X ρ₂
ρ₁ + ρ₂
ρ₁ + ρ₂ ÷ ρ₁ X ρ₂
ρ₁ X ρ₂ / ρ₁ + ρ₂
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Sure I will answer it for you mate,
option D is the answer..
Answered by
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Answer:
ρ₁ X ρ₂ / ρ₁ + ρ₂
R=ρl/a
R is directly proportional to the ρ
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