At 'yield point' of a copper wire
A)the load hasn't exceeded the elastic limit yet; so, Hooke's law applies
B)the load has already exceeded the elastic limit and the material has become plastic
C)even the plastic stage has passed and the wire has snapped already
D)Like Brass and Bronze, Copper has no yield point

Question

Quizplus · Accepted Answer

At the yield point, the load has exceeded the elastic limit of the material, meaning it has entered the plastic deformation stage where it will not return to its original shape when the load is removed. This is true for copper, which does have a yield point contrary to the assertion in option D.

At 'Yield Point' of a Copper Wire