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two wires have their lengths, diameters and resistivity all in the ratio of 1: 2. if the resistance of the thinner wire is 10 ohm, the resistance of the thicker wire is:

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Q.

Two wires have their lengths, diameters and resistivity 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

[C] 20 ohm

[D] 40 ohm

Answer & Explanation
Option: [B]

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