Physics · Current Electricity
A cylindrical wire AB consists of three equal parts AC, CD, and DB made of the same material, but having different cross-sectional radii of r, 3r, and 5r respectively. A battery is connected across the wire AB. If V1, V2, and V3 are the potential differences across AC, CD, and DB respectively, then which of the following ratios is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1V 1 : V 2 : V 3 = 1 : 3 : 5
- 2V 1 = V 2 = V 3
- 3V 1 : V 2 : V 3 = 1 : 9 : 25
- 4V 1 : V 2 : V 3 = 225 : 25 : 9✓
Correct answer
V 1 : V 2 : V 3 = 225 : 25 : 9
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