Mathematics · Electricity
A wire of a certain material having length L and cross-sectional area A has a resistance of 2 Ω. What will be the resistance of another wire of the same material having length 2L and cross-sectional area A/2?
- 14 Ω
- 28 Ω✓
- 31 Ω
- 42 Ω
Correct answer
8 Ω
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