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Physics-Resistance & Resistivity

NEET Physics Resistance & Resistivity MCQ Question

Type: MCQ-diagram based-Easy-Class 12

In the diagram shown above, the resistance R of a wire is measured to be 5.0 Ω with a length of 15 m and a cross-sectional area of 6.0 × 10^-7 m². What is the resistivity of the wire material?

Question diagram
A

2.0 × 10^-7 Ωm

B

5.0 × 10^-8 Ωm

C

1.5 × 10^-6 Ωm

D

3.0 × 10^-7 Ωm

Correct Answer

Option A

Detailed Explanation

Using the formula for resistivity, ρ = R × A / L, with R = 5.0 Ω, A = 6.0 × 10^-7 m², and L = 15 m, the resistivity ρ calculates to 2.0 × 10^-7 Ωm.

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