HOMEWORK for JUNE 30, 2005
For the following circuits, draw the circuit and fill out the
V  M  ?Z  T table (including the battery or batteries). Also
mark a point between each pair of circuit elements (resistors or
batteries) and determine the electric potential at that point; let the
negative terminal of the largest battery be set at zero potential. Also
indicate the direction of the electric current in each circuit.
1. A series circuit consisting, in order, of a 5-H resistor, a 22-volt
battery going  to  , and a 6-H resistor.
V
5H
6H
11 H
M
2A
2A
2A
?Z
10 V
12 V
22 V
T
20 W
24 W
44 W
2. A series circuit consisting, in order, of a 40-V battery going  to  ,
a 1-H resistor, a 3-H resistor, a 16-V battery going  to  , and a 4-H
resistor.
V
1H
3H
4H
M
3A
3A
3A
3A
3A
?Z
3V
9V
12 V
40 V
 16 V
T
9W
27 W
36 W
120 W
 48 W
3. A 14-V battery going  to  , a 1-H resistor, a 20-V battery going
 to  , a 2-H resistor, a 16-V battery going  to  , and a 3-H
resistor.
V
1H
2H
3H
M
5/3 A
5/3 A
5/3 A
5/3 A
5/3 A
5/3 A
?Z
5/3 V
10/3 V
5V
14 V
 20 V
16 V
T
25/9 W
50/9 W
25/3 W
70/3 W
 100/3 W
80/3 W
Total power dissipated in resistors œ 50/3 W, same as the net power
supplied by the three batteries.