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UNIVERSITY OF MASSACHUSETTS DARTMOUTH COLLEGE OF ENGINEERING EGR 101 INTRODUCTION TO ENGINEERING I This assignment is due Thursday, October 18, 2012. Use engineering papers. Show all of your steps. Present your work neatly and clearly. Box your final answers. Problem 1: Consider the following circuit that consists of multiple series-aiding and series-opposing batteries, which power a resistance of 10k . Indicate whether point A is at higher or lower potential than point B, and explain why. Reduce the circuit to a single battery with a net voltage equivalent to the algebraic sum of all the voltages in the original circuit. Show the proper polarity of the battery at points A and B; and indicate which way the conventional current flows. Calculate the current in mA. Calculate the power provided by the battery in mW. Problem 2: Problem 25 pg 94. Problem 3: Problem 13 pg 93. Use information in section 2.3.5 on pg 56 in text Problem 4: Problems 6b, d, f on p. 73 strictly by the resistor color code as shown in Figure 2.10 on p. 52. Problem 5: Problems 8b, e, g on p. 74 strictly by the resistor color code as shown in Figure 2.10 on p. 52. Problem 6: Complete the chart in problem 21 on p. 94. Current 10 mA Voltage Resistance 32 V 3.3 kΩ 15 mA 24 mA 45 V 1.2 kΩ Power 4W 16 mW 231 mW