EE 203 Homework 1
1.
Determine the equivalent resistance seen by the source in each of the following circuits.
2.
Determine the equivalent resistance for each of the circuits shown below.
3.
For the following circuit io is 4.0 A. Determine i1, and show that the power delivered by the
source is equal to the power dissipated by the resistors.
The voltages and currents for the circuit shown below are. Determine the total power
developed and the total power dissipated in the circuit.
4.
Element
a
b
c
d
e
f
5.
Voltage
(mV)
150
150
100
250
300
‐300
Current (A)
0.6
‐1.4
‐0.8
‐0.8
‐2.0
1.2
Determine the value of the resistors in the following circuit that will meet the following criteria.
Ig = 5mA vg = 1.0V i1 = 4i2 i2 = 8i3 i3 = 5i4
When you engage the starter on your car you notice that the voltage drops from 12 V to
7.0 V. The car has a new 12 V lead acid battery with an internal resistance of 35 mΩ. What is
the starting resistance of the starter motor? Hint, you can model the system as an ideal voltage
source in series with the battery internal resistance and the motor resistance.
6.