Two wires A and B are made of the same material. Wire A has a length of I, and a diameter of R while wire B has a length of 2L and a diameter of R/2. If the two wires are stretched by the same force, the elongation in A divided by the elongation in B is:
Correct answer: A. ⅛
- A. ⅛
- B. ¼
- C. 4
- D. 8
Explanation
Wires made of the same material have the same Young Modulus.Hence, option A is the correct choice.
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