Piezoelectric materials respond to an electric field by change of shape. The strain induced by a field E is 

where is the piezoelectric charge coefficient, listed in Table A8. Its units are pm/V. A sample of soft PZT (lead zirconium titanite) is exposed to a field of 10 MV/m. How large is the resulting strain? You will find the piezoelectric charge coefficient for soft PZT in Table A8. Use a mean value.

Data From Appendix Table A8