Aparallel-poled 4.0 cm long x 2.0 cm wide bimorph made of pzt-5a (see table below) has total thickness of 0.50 mm and the three layers have approximately the same thickness (neglect adhesive and electrodes) i) explain (with the aid of a sketch) how the piezoelectric effect is used in this ii) sketch a circuit to drive this piezoelectric device as an actuator without risking i) estimate its total capacitance device to make actuation happern [4 marks depoling. explain why your circuit will not induce depoling [4 rparks] 14 marks] a similar device is identical to this one except for being half the width (10 mm). for this other device, blocking force is 70 mn and free deflection is 0.21 mm at a given voltage. what are blocking force and free deflection of the original device at the same voltage? iv) [4 marks] 1700 e33 5830