Physics · Factors Affecting Resistance
Which of the following mathematical expressions correctly represents the relationship between resistance (R), resistivity (ρ), length (l), and cross-sectional area (A) of a conductor?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1R = 1 / (ρ · l · A)
- 2R = (ρ · A) / l
- 3R = ρ (l / A)✓
- 4R = ρ (A / l)
Correct answer
R = ρ (l / A)
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