Resistance depends on the material's resistivity and the dimensions (length and cross-sectional area) of the conductor. Ensure all units are consistent (e.g., meters and m², or centimeters and cm²) before calculation.
Consider a copper wire of length 1m and area of cross-section 1mm². Given the resistivity of the copper is 1.7 × 10⁻⁶ Ω cm. What is the resistance of this wire?
Asked in UPSC Geoscientist 2021 · Topic: Electric Current (Factors affecting resistance (length, area, material, temperature))
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