# HW1 - ECE 2100 Professor Alyssa Apsel Homework Assignment#1...

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ECE 2100: Professor Alyssa Apsel Homework Assignment #1 Due September 8th 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. 0.001A = ??? mA b. 10 5 = ???? k c. 10 -3 s/cycle = ??? Hz d. 1.6 x 10 -19 C/s = ??? fA e. If I = 1mA through a cross section of wire, how many charges pass through that cross section of wire in 2 seconds? 2) Book Problem 1.15 3) Book Problem 1.22 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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6) Find Vo for the circuit below 7) John and Alice hold hands while each one is stepping on a grounded plate. If they each have the same arm and torso resistance (see figure below) how much worse is the zap that John gets through his torso when he grabs a 120V battery as shown.

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