Name (no name, no credit!) : UFID: Meeting time (circle one): R2 (6454) R3 (3900) R7 (4299) F7 (3903)

Quiz #4B: – capacitive circuitry – **LOOK** **LOOK**

Allowed info: The SI-prefixes you need are and . Also, .

Problem: George Lucas designs a Special Edition purely-capacitive circuit1 driven by an E.M.F. of

wherein , , , , and . Question (a) (2 point(s)): Calculate the equivalent capacitance of all capacitors.

Question (b) (3 point(s)): Calculate the energy stored in .

1 In which critics complained that the placement of things tended to be rather dense.

Problem 2: Two parallel plates of area are given charges of equal magnitudes but opposite

signs. The electric field within the dielectric material filling the space between the plates is . Question 2a (1 point(s)): Calculate the dielectric constant of the material.

Question 2b (4 point(s)) : Determine the magnitude of the charge induced on each dielectric surface.