1. DC Circuit Analysis Quiz
Date ________
Name ____________
DC Circuit Analysis
Quiz
1) Draw a circuit diagram showing three resistors in Series:
2) Calculate the equivalent resistance of this circuit:
3) What is the voltage across resistor R2 in this circuit?
4) Extra credit: What is the current thru R2 ?
R2 + R3 + R4 = = 30Ω (R1 x 30)/(R1 + 30) = 10 x 30/40 = 300/40 = 7.5Ω
(10 x 2)/(10 + 2) = 20/12 = 1.66Ω + 5Ω = 6.66Ω : 10 – (10/6.66 x 5) = 2.5v
I = V/R = 2.5/2.0 = 1.25A

2. DC Circuit Analysis Homework
Date ________
Name ____________
DC Circuit Analysis
Homework
What is the equivalent resistance of this circuit?
For the circuit shown, find a) the current in each resistor, b) the voltage across each resistor and c) the total power delivered. (use the back side if you need more space)
Find the current in each resistor in the following circuit. (use the back side if you need more space)
4Ω + 6Ω = 10Ω : (10 x 10)/( ) = 5Ω
(5 x 6)/(5 + 6) = 2.72Ω
20Ω + 20Ω = 40Ω : IR1 = 20v/20Ω = 1A : IR2 = IR3 = 20v/40Ω = 0.5A : VR1 = 20v : VR2 = VR3 = 0.5A x 20Ω = 10v : P = EI = 20 x 1.5 = 30W
I1 = I2 + I3 : I1 = V1 – R1 I1 + V2 = 0 : -V2 – R2 I3 –V3 – R3 I3 = 0 : I1 = 10 -4I1 + 5 = 0 : 4I1 = 15 : I1 = 3.75A(up) -5 -4I I3 = 0 : -10 = 8I3 : I3 = -1.25A (left) : I2 = I1 -I3 = 2.5A(right)