If a wire of 1Ω resistance is stretched to four times its length then resistancewill become ( )c) !" Ω c) !# Ωd) 2 Ω d) 4 Ω
Question
Solution 1
The resistance (R) of a wire is directly proportional to its length (L) and inversely proportional to its cross-sectional area (A). This relationship is given by the formula:
R = ρ * (L / A)
where ρ (rho) is the resistivity of the material from which the wire is made.
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