hw2_2010_fall - Homework 2 ECE 1882 Due Sept 30, 2010 at...

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Homework 2 ECE 1882 Due Sept 30, 2010 at START of class You may use your notes and a calculator for this homework. Name: __________________________ 1) A flashlight is powered by four 1.5V “D” batteries arranged in series as a power supply; these batteries are then placed in series with a switch and a light bulb. The light bulb can be considered to be a 12 Ohm resistor. a) How many volts are provided to the bulb? b) What is the current passing through the bulb when the batteries are fresh? The bulb will be at or near full brightness as long as at least 200 mA of current is flowing through the bulb. c) What is the voltage of the power supply when the light stops working? d) What is the voltage on a single battery in the power supply? Explain.
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Homework 2 ECE 1882 Due Sept 30, 2010 at START of class 2) Solve for I 1 , I 2 , and V out in the circuit when SW 1 is open or closed. Assume the supply voltage is 9V. Show your work and enter answers in the table below. Answers must include correct units. Note: It is
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This note was uploaded on 10/10/2010 for the course ECE 1882 taught by Professor Staff during the Fall '08 term at Georgia Institute of Technology.

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hw2_2010_fall - Homework 2 ECE 1882 Due Sept 30, 2010 at...

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