Physics · Current Electricity
Two wires A and B are made of the same material and have the same length but different cross-sectional areas. If the resistance of wire A is 9 times the resistance of wire B, the ratio of the radius of wire A to that of wire B is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 13 : 1
- 21 : 9
- 31 : 3✓
- 49 : 1
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1 : 3
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