Q.7 A wire of given material having length l and area of cross-section A
has a resistance of 8 Ω. What would be the resistance of another wire
of the same material having length l/2 and area of cross-section 2A?
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The resistance of another wire is 2 ohm.
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- R^1=8 e/2 2/A
- R^1=8 e 4A
- R^1= 1^4R
- R^1=1n
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