Physics · Current Electricity
A copper wire has a resistance of 10 Ω. If it is replaced with another copper wire of the same length but twice the cross-sectional area, its resistance will be ______.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 120 Ω
- 22.5 Ω
- 310 Ω
- 45 Ω✓
Correct answer
5 Ω
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