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Unformatted text preview: ENES 100 Introduction to Engineering Design Fall 2010 Probl e m S e t #3 A ss ign e d: Sept. 17, 2010 Du e : In class on Sept. 27 (M) or Sept. 28 (Tu) R e ading: Chapter 4: Ba s i c El ec t ri c Cir c ui ts and S e n s or s Probl e m 3 . 1 In the above circuit the current through the 50 ohm resistor is found to be 0.1 A. What is the voltage being provided by the voltage source whose value is not marked? Probl e m 3 . 2 A real battery can be modeled as an ideal voltage source V s , connected in series with an internal resistance R i , as shown below Real batteries also have an energy storage capacity, often specified in milliamp hours (mAh). Real batteries will drain down more quickly to a reduced voltage if they are operated at higher currents. A particular battery with a nominal output voltage of 12 V and a capacity of 2200 mAh is being used to drive a series of identical fans in parallel. ENES 100 Introduction to Engineering Design Fall 2010 When the battery is connected to one fan the current drawn is 1 A and the battery voltage...
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This note was uploaded on 09/27/2011 for the course ENES 100 taught by Professor Jacob during the Fall '08 term at Maryland.
- Fall '08