Copper has a very low specific resistance, with a value of 1.68* 10-8 Ω m at 20°C. Copper is a good conductor of electricity due to its low resistivity. As a result of its low specific resistance, copper is preferred in most electrical wiring.
Question : Identify the correct statement
Option 1: The resistance of a wire depends on the length and density of the wire.
Option 2: Specific resistance is the same for all conductors.
Option 3: The resistance of a wire depends on the length and cross-section of the wire.
Option 4: Specific resistance is dependent on the cross-sectional area of the wire.
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