The elastic energy stored in a wire of Young's modulus $Y$ is
  • A$Y \times \frac{{{\rm{Strai}}{{\rm{n}}^{\rm{2}}}}}{{{\rm{Volume}}}}$
  • BStress $ \times $ Strain $ \times $ Volume
  • C$\frac{{{\rm{Stres}}{{\rm{s}}^{\rm{2}}} \times {\rm{Volume}}}}{{2Y}}$
  • D$\frac{1}{2}Y \times $ Stress $ \times $ Strain $ \times $ Volume
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