how does the resistance of a conducting wire change with its area of cross
section?
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The resistance of a conductor is inversely proportional to its area of cross section. A dummy approach: The concept of current flow in a conductor is analogous to liquid flow in a pipe. ... As the amount of current flowing at constant voltage increases with increase in cross sectional area, resistance decreases.
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Resistance of wire is inversely proportional to the area of cross section.
When cross section area of wire is doubled then the resistance of wire gets halved
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