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Writer's pictureEvan Toh

What is the resistance of Y when its length is doubled and diameter three times larger? 2018PPp1q31

When question states that radius or diameter is increased by 3 times, that note that cross-sectional area does not increase by 3 times. It increases by 9 times due to the square. Refer to this question to learn the concetps.

Answer: Option A



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