A structural steel wire is stretched under a tensile load but fully returns to its original length when the load is completely released. Which statement correctly describes the wire during this loading and unloading cycle?
The wire has undergone plastic deformation.
The wire has undergone elastic deformation.
The wire has exceeded its yield point.
The wire has undergone permanent deformation.
39 exam-style questions on OCR GCSE Physics Forces in action. Each one has a worked solution and a mark scheme showing where the marks go.