Q: A metal wire of length l and diameter d has a resistance R. What would be the resistance of another wire of the same metal and of same length but having double the diameter?
(a)R
(b)R/4
(c)R/2
(d)2R
Correct Answer: (b)
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Q: A metal wire of length l and diameter d has a resistance R. What would be the resistance of another wire of the same metal and of same length but having double the diameter?
Correct Answer: (b)