Physics (AS & A Level) · Oct / Nov 2024 · Paper 11 · Question 20
A wire has original length L and cross-sectional area A. A tensile force F is applied to the wire which causes it to have extension x. The wire obeys Hooke's law. What is an expression for the Young modulus of the material from which the wire is made?
- Astress × x / L
- BF / (A × strain)
- CF × x / (A × L)
- Dstrain / stress
As printed in the paper
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Correct answer: B. F / (A × strain)
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