Design a circuit in which two different switches of the typeshown in Fig. 19–39 canbe used to operate thesame lightbulb fromopposite sides of aWireWireroom.FIGURE 19-39WireQuestion 17.

Consider the circuit diagram with two switches for different rooms operating the same bulb.

Answered: Design a circuit in which two different…

University Physics Volume 2

18th Edition

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Chapter14: Inductance

Section: Chapter Questions

Problem 3CQ: The ignition circuit of an automobile is powered by a 12-V battery. How are we able generate large...

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Check Your Understanding Consider the electrical circuits in your home. Give at least two of circuits that must use a combination of series and parallel circuits to operate efficiently.
The ignition circuit of an automobile is powered by a 12-V battery. How are we able generate large voltages with this power source?
Consider the circuit in Figure 21.29 and assume the batter has no internal resistance. (i) Just after the switch is closed, what is the current in the battery? (a) 0 (b) /2R (c) 2/R (d) /R (e) impossible to determine (ii) After a very long time, what is the current in the battery? Choose from the same choices.
Check Your Understanding The voltage supplied to your house varies as V( t )= V max sin( 2ft ) If a resistor is connected across this voltage, will Ohm’s law V = IR still be valid?
A short circuit in a 120-V appliance cord has a0.500- resistance. Calculate the temperature rise of the2.00 g of surrounding materials, assuming their specific heat capacity is 0.200cal/gC and that it takes 0.0500 sfor a circuit breaker to interrupt the current. Is this likely to be damaging?
Refer to Figure 10.17 and the discussion of lights dimming when a heavy appliance comes on. (a) Given the voltage source is 120 V, the wire resistance is 0.800 and the bulb is nominally 75.0 W, what power will the bulb dissipate if a total of 15.0 A passes through the wires when the motor comes on? Assume negligible change in bulb resistance, (b) What power is consumed by the motor?
Check Your Understanding When using Kirchhoff’s laws, you need to decide which loops to use and the direction of current flow through each loop. In analyzing the circuit in Example 10.7, the direction of current flow was chosen to be clockwise, from point a to point b. How would the results change if the direction of the current was chosen to be counterclockwise, from point b to point a?
When the switch shown in Fig. 19–45 is closed, what willhappen to the voltage across resistor R1 It will(a) increase. (b) decrease. (c) stay the same
For the circuit shown in Fig. 19–46, what happens when the switch S is closed? (a) Nothing. Current cannot flow through the capacitor. (b) The capacitor immediately charges up to the battery emf. (c) The capacitor eventually charges up to the full battery emf at a rate determined by R and C. (d) The capacitor charges up to a fraction of the battery emf determined by R and C. (e) The capacitor charges up to a fraction of the battery emf determined by R only. R FIGURE 19–46 MisConceptual Question 10.
24. (III) Consider the network of resistors shown in Fig. 19–52. Answer qualitatively: (a) What happens to the voltage across each resistor when the switch S is closed? (b) What happens to the current through each when the switch is closed? (c) What happens to the power output of the battery when the switch is closed? (d) Let R1 = R = R3 = R4 = 155 N and V = 22.0 V. Determine the current through each resis- tor before and after closing the switch. Are your qualitative predictions confirmed? R1 ww S R3 RA R2 FIGURE 19-52 Problem 24. ww
7. When the switch shown in Fig. 19–45 is closed, what will happen to the voltage across resistor R,? It will (a) increase. (b) decrease. (c) stay the same. R1 S V R3 R4 FIGURE 19-45 R2 MisConceptual Questions 7 and 8.
(II) In Fig. 19–69 (same as Fig. 19–20a), the total resistance is 15.0 kN, and the battery's emf is 24.0 V. If the time con- stant is measured to be 18.0 µs, calculate (a) the total capacitance of the circuit and (b) the time it takes for the voltage across R the resistor to reach 16.0 V after the switch C= is closed. FIGURE 19–69 Problem 54. S

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Design a circuit in which two different switches of the type shown in Fig. 19–39 can be used to operate the same lightbulb from opposite sides of a Wire Wire room. FIGURE 19-39 Wire Question 17.