115b-5

Fourth circuit for the myPLTW Digital Electronics class for Activity 1.1.5.b. I(T) = 5.78mA (I(T) = 1.46mA + 1.76mA + 2.55mA) I(R1) = 1.46mA (I(R1) = 12V / 8200Ω = .00146A, rounded to 1.46mA) I(R2) = 1.76mA (I(R2) = 12V / 6800Ω = .00176A, rounded to 1.76mA) I(R3) = 2.55mA (I(R3) = 12V / 4700Ω = .00255A, rounded to 2.55mA) All problems found by using Ohm's Law, I = V / R.