WhiteBoard: Series/Parallel Circuits 

The below circuit consists of an ideal battery and five resistors as shown.  
R1, R2 and R3 are all 20.0 , and R3 and R5 are both 10.0 .  V1 provides 10.0 VDC.

a.	Draw a simplified circuit with only series circuit elements.
b.	Draw a simplified circuit with only ONE series resistor.
c.	Find the total equivalent resistance for all resistors in this circuit.
d.	What current flows through the battery?
e.	What current flows through each resistor?
f.	What is the potential difference (voltage drop) across each resistor?

Reference:

MacIsaac, D.L. (1999). NAU PHY 112 Midterm Exam. Available from the author.

WHITEBOARD KEY (for original 17Feb00 S/P circuit):
Series/Parallel resistor combination from PHY112 98 MTEx2

a.	Any reduced circuit drawing. [1 pt]
b.	Total resistance is 56.7 or 57 . [1 pt]
c.	Total current is 0.18A. [1 pt]
d.	R1 has 0.18A flowing through it; R2 has 0.06A flowing through them. [2 pt]