Tutorials in Introductory Physics
Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 6.1, Problem 2bT

Compare the brightness of each of the bulbs in the two-bulb series circuit with that of a bulb in a single-bulb circuit.
Use the assumptions we have made in developing our model for electric current to answer the following questions:

1. How does the current through a bulb in a single-bulb circuit compare with the current through the same bulb when it is connected in series with a second bulb? Explain.
2. What does your answer to question I imply about how the current through the battery in a single-bulb circuit compares to the current through the battery in a two-bulb series circuit? Explain.

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Solve the following problems. Show and COMPLETE solutions. Draw the CIRCUIT DIAGRAM or the equivalent circuit 1. Three resistors, 11 Ω , 7 Ω, 20 Ω  are connected in parallel. If placed in a circuit with a 12-volt power supply. Determine the equivalent resistance, the total circuit current, and the voltage drop across and current in each resistor, the total power supplied to the circuit.
Consider the circuit configurations below, where two lightbulbs are connected to a single battery in different ways. Based on what you learned about parallel and series connections in lab, which of these two configurations would result in the light bulbs being the brightest? Fully explain your reasoning.   Imagine that you are given four 100Ω resistors to build a circuit. Your challenge is to use all four of the resistors in the circuit, but the circuit must have an overall equivalent resistance of 100Ω. Is this possible? If so, draw a diagram of the circuit and explain how the connections result in a 100Ω equivalent resistance. If this is not possible, draw a diagram of a circuit involving all four resistors that has an equivalent resistance as close to 100Ω as is possible.
Imagine building a circuit using a perfect conductor (a device with zero resistance) in place of the carbon resistor a. Would the plot of the data be a straight line? b. If yes, what would the slope of that line be? If no, what shape would the line be?

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Tutorials in Introductory Physics

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