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ECE 2100:
Professor Alyssa Apsel
Homework Assignment
#1
Due September
9th
Areas covered:
Electrical quantities: Charge, Voltage, Current, Power, Energy, Resistance
Basic circuit laws:
Kirchoff’s current and voltage laws, Ohms law
Basic circuits:
series, parallel combinations, voltage divider, current divider.
1)
Perform the following conversions
a.
0.01A =
??? mA
b.
10
5
= ???? k
c.
10
4
s/cycle = ??? Hz
d.
1.6 x 10
20
C/s = ??? fA
e.
If I = 10mA through a cross section of wire, how many charges pass
through that cross section of wire in 3 seconds?
2)
Book Problem 1.11
3)
Book Problem 1.19
4)
For the following circuit
a)
Find Vout, the voltage across R4, in terms of other variables.
b)
What is the power dissipated through R4?
5)
For the following circuit
a)
What is the current through resistor R1?
b)
What are the current through and voltage drop across R1 if R1= 1k
?
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Find Vo for the circuit below (relative to bottom terminal)
7)
John and Alice hold hands while each one is stepping on a grounded plate.
If they
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 Spring '05
 KELLEY/SEYLER
 Volt

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