41) How many storage locations are available when a mercury device has twelve address lines?

42) The logic family with the lowest power dissipation is

43) When 30V is applied to four series resistors, 60 microAmps flows. If R1=42 k Ohm, R2=47 k Ohm, and R3=56 k Ohm, what is the value of R4?

44) In a class B push-pull amplifier, the transistors are biased slightly above cutoff

45) There are not transients in pure resistive circuits because they