Q379
Two wires have their lengths, diameters and resistivities all in the ratio of 1 : 2. If the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is
A.
5 ohm
B.
10 ohm
AnswerC.
20 ohm
D.
40 ohm
Answer: Option B
Solution
Answer: Option B
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