Physics (AS & A Level) · Oct / Nov 2021 · Paper 11 · Question 19

A metal wire, of cross-sectional area A and unstretched length l, is subjected to stress σ. As a result it has strain ε. Which expression gives the Young modulus of the metal?

1. Aε/σ
2. BεA/(σl)
3. Cσ/ε
4. Dσl/(εA)

As printed in the paper