HW04 - Physics 201 Homework Set 04 CHAPTER 26 DC Circuits...

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Physics 201 Homework Set 04 CHAPTER 26: DC Circuits 26[ 3, 4, 10, 16, 19, 44, 48, 69, 78, 83, 84] 1 26–1 Emf and Terminal Voltage 3. (II) A 1.5-V dry cell can be tested by connecting it to a low-resistance ammeter. It should be able to supply at least 25 A. What is the internal resistance of the cell in this case, assuming it is much greater than that of the ammeter? 4. (II) What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 8.4 V when the starter draws 95 A? What is the resistance of the starter? 26–2 Resistors in Series and Parallel In these Problems neglect the internal resistance of a battery unless the Problem refers to it. 10. (II) Three 1.70-k resistors can be connected together in four different ways, making combinations of series and/or parallel circuits. What are these four ways, and what is the net resistance in each case? 16. (II) Determine ( a ) the equivalent resistance of the circuit shown in the figure below, and ( b ) the voltage across each resistor.

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