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 20.1, Problem 1TH

In tutorial, you compared the relative brightness of the bulbs in the three circuits shown. In the diagrams, boxes have been drawn around the networks of bulbs in each circuit.

Chapter 20.1, Problem 1TH, In tutorial, you compared the relative brightness of the bulbs in the three circuits shown. In the
On the basis of your observations and the rule you developed in tutorial relating current through the battery to total resistance, rank the networks (boxes) A−C according to their equivalent resistance. Explain your reasoning on the basis of the model. (Do not use math.)

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A circuit is constructed as shown in the diagram to the right. R1 = 22 Ω, R2 = 54 Ω, R3 = 83 Ω, and R4 = 64 Ω. Write an equation for the equivalent resistance of the circuit in terms of the individual resistances.  Calculate for the equivalent resistance of the circuit in ohms.
The voltage V (volts), current I (amperes), and resistance R (ohms) of an electric circuit like the one shown here are related by the equation V=IR. Suppose that V is 1 increasing at the rate of 3 volt/sec while I is decreasing at the rate of amp/sec. Let t denote time in seconds. Answer the following questions. 5 dV dt = dl dt dl b. What is the value of dt? volt/sec (Simplify your answer.) OA. O C. amp/sec (Simplify your answer.) c. What equation relates to dR dt dR dV dt dt dR dt 1 dV dl +V- I dt dt dl dv =1+VdT dt dl and dt? OB. O D. d. Find the rate at which R is changing when V = 40 volts and 1= 4 amp. Is R increasing or decreasing? R is changing at ohm/sec. (Simplify your answer.) Is R increasing or decreasing? dR dt dR dt = 1 dv I'dt 1 (dV 1 dt V dl I dt F R www
Directions: Solve for the given problems. Show your complete solutions. Round off your answers into 3 significant figures.

Chapter 20 Solutions

Tutorials in Introductory Physics

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