College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 19, Problem 16P
In a laboratory experiment, you vary the current through an object and measure the resulting potential difference across it in each case. Figure 19.48 shows a graph of this potential Vas a function of the current I. (a) Does Ohm’s law apply to this object? Why do you say so? (b) How is the resistance of the object related to the slope of the graph? Show why. (c) Use the slope of the graph to find the resistance of the object.
Figure 19.48
Problem 16.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Measurements made during severe electrical storms reveal that lightning bolts can carry as much as 30 C of charge and can travel between a cloud and the ground in time intervals of around 100 μs (and sometimes even shorter). Potential differences have been measured as high as 400 million volts.
1)What is the current in such a lightning strike? (Express your answer to two significant figures.)
2)What is the resistance of the air during such a strike? (Express your answer to two significant figures.)
3)How much energy is transferred during a severe strike? (Express your answer to two significant figures.)
4)What mass of water at 100∘C could the lightning bolt in part (3) evaporate? The latent heat of vaporization of water at 100∘C is LV=2260 kJ/kg. (Express your answer to two significant figures.)
If you try and measure the voltage of a battery with a voltmeter connected in series, you won't get a completely accurate measurement because of the internal resistance of the battery. To see how large this effect is, consider trying to measure the terminal voltage of a 1.585 V alkaline cell having an internal resistance of 49 Ω by placing a 0.85 kΩ voltmeter across its terminals.
What current flows in A?
Two identical light bulbs, X and Y, are connected in parallel to a battery, with an internal resistance of r and an emf of E. If the filament of Y breaks, the potential difference over resistor X will
Chapter 19 Solutions
College Physics (10th Edition)
Ch. 19 - You create a circuit with three resistors and a...Ch. 19 - The energy that can be extracted from a storage...Ch. 19 - A cylindrical rod has resistivity p. If we triple...Ch. 19 - True or false? (a) Adding more resistance to a...Ch. 19 - Why does the resistance of an object increase with...Ch. 19 - How does a capacitor store energy? Can a resistor...Ch. 19 - High-voltage power supplies are sometimes designed...Ch. 19 - If you charge a capacitor through an R-C circuit,...Ch. 19 - Can all combinations of resistors be reduced to...Ch. 19 - In a two-cell flashlight, the batteries are...
Ch. 19 - You connect a number of identical light bulbs to a...Ch. 19 - When you scuff your shoes across a nylon carpet,...Ch. 19 - A cylindrical metal rod has a resistance R. If...Ch. 19 - A resistor R and another resistor 2R are connected...Ch. 19 - Which statements about the circuit shown in Figure...Ch. 19 - When the switch in Figure 19.40 is closed, the...Ch. 19 - Three identical light bulbs are connected in the...Ch. 19 - You connect three resistors with resistances R,...Ch. 19 - In the circuit shown in Figure 19.42, resistor A...Ch. 19 - In which of the two circuits shown in Figure 19.43...Ch. 19 - The battery shown in the circuit in Figure 19.44...Ch. 19 - A battery with no internal resistance is connected...Ch. 19 - The battery shown in the circuit in Figure 19.46...Ch. 19 - Three identical light bulbs. A, B, and C, are...Ch. 19 - A 5.0 A current flows through the leads of an...Ch. 19 - Lightning strikes. During lightning strikes from a...Ch. 19 - Transmission of nerve impulses. Nerve cells...Ch. 19 - In an ionic solution, a current consists of Ca2+...Ch. 19 - A 14 gauge copper wire of diameter 1.628 mm...Ch. 19 - You want to precut a set of 1.00 strips of 14...Ch. 19 - Prob. 7PCh. 19 - A tightly coiled spring having 75 coils, each 3.50...Ch. 19 - Prob. 9PCh. 19 - Prob. 10PCh. 19 - A steel wire of length L and radius r1 has a...Ch. 19 - Prob. 12PCh. 19 - Prob. 13PCh. 19 - A 1.50 m cylindrical rod of diameter 0.500 cm is...Ch. 19 - Prob. 15PCh. 19 - In a laboratory experiment, you vary the current...Ch. 19 - The following measurements of current and...Ch. 19 - Prob. 18PCh. 19 - Current in the body. The resistance of the body...Ch. 19 - A copper transmission cable 100 km long and 10.0...Ch. 19 - Prob. 21PCh. 19 - A steel wire, of length L and diameter D, has a...Ch. 19 - A 6.00 V lantern battery is connected to a 10.5 ...Ch. 19 - When the switch in Figure 19.49 is open, the...Ch. 19 - A non-ideal 10.0 V battery is connected across a...Ch. 19 - Prob. 26PCh. 19 - An automobile starter motor is connected to a 12.0...Ch. 19 - Consider the circuit shown in Figure 19.50. The...Ch. 19 - Prob. 29PCh. 19 - Power rating of a resistor. The power rating of a...Ch. 19 - An idealized voltmeter is connected across the...Ch. 19 - Treatment of heart failure. A heart defibrillator...Ch. 19 - Light bulbs. The wattage rating of a light bulb is...Ch. 19 - Electrical safety. This procedure is not...Ch. 19 - Electric eels. Electric eels generate electric...Ch. 19 - A 500 and a 200 resistor are connected in series...Ch. 19 - The battery for a certain cell phone is rated at...Ch. 19 - For the circuit in Figure 19.51, find (a) the rate...Ch. 19 - A 240 W electric heater is designed to operate...Ch. 19 - Find the equivalent resistance of each combination...Ch. 19 - Calculate the (a) maximum and (b) minimum values...Ch. 19 - Each of two identical uniform metal bars has a...Ch. 19 - A 40.0 resistor and a 90.0 resistor are...Ch. 19 - Three resistors having resistances of 1.60 , 2.40...Ch. 19 - Now the three resistors of the previous problem...Ch. 19 - Compote the equivalent resistance of the network...Ch. 19 - Compute me equivalent resistance of me network in...Ch. 19 - Light bulbs in aeries. I he power rating or o...Ch. 19 - Prob. 49PCh. 19 - The batteries shown in the circuit in Figure 19.50...Ch. 19 - Find the emfs 1 and 2 in the circuit shown in...Ch. 19 - For the circuit shown in Figure 19.58, calculate...Ch. 19 - In the circuit shown in Figure 19.59, find (a) the...Ch. 19 - In the circuit shown in Figure 19.60, current...Ch. 19 - In the circuit shown in Figure 19.61, the 6.0 ...Ch. 19 - A 500.0 resistor is connected in series with a...Ch. 19 - A fully charged 6.0 F capacitor is connected in...Ch. 19 - A 12.4 F capacitor is connected through a 0.895 M...Ch. 19 - A 6.00 F capacitor that is initially uncharged is...Ch. 19 - A capacitor is charged to a potential of 12.0 V...Ch. 19 - A 1.0 F capacitor is being charged by a 9.0 V...Ch. 19 - In the circuit shown in Figure 19.62. the...Ch. 19 - Charging and discharging a capacitor. A 1.50 F...Ch. 19 - Graphing the charge on a capacitor as a function...Ch. 19 - The circuit shown in Figure 19.63 contains two...Ch. 19 - If an ohmmeter is connected between points a and b...Ch. 19 - A refrigerator draws 3.5 A of current while...Ch. 19 - A toaster using a NichromeTM heating element...Ch. 19 - A piece of wire has a resistance R. It is cut into...Ch. 19 - Flashlight batteries. A typical small flashlight...Ch. 19 - In the circuit of Figure 19.65. find (a) the...Ch. 19 - Struck by lightning. Lightning strikes can involve...Ch. 19 - Each of the three resistors m Figure 19.66 has a...Ch. 19 - Energy use of homo appliances. An 1800 W toaster,...Ch. 19 - Two identical 1.00 wires are lad side by side aid...Ch. 19 - Three identical resistors are connected in series....Ch. 19 - (a) Calculate the equivalent resistance of the...Ch. 19 - A power plant transmits 150 kW of power to a...Ch. 19 - What must the emf in Figure 19.69e be in order...Ch. 19 - For the circuit shown in Figuro 19.70. if a...Ch. 19 - A 4600 resistor is connected across a charged...Ch. 19 - A capacitor that is initially uncharged is...Ch. 19 - In the circuit shown in Figure 10.71. R it a...Ch. 19 - Spiderweb conductivity. Some types of spiders...Ch. 19 - If the conductivity of the thread results from the...Ch. 19 - Prob. 86PPCh. 19 - In another experiment, a piece of the web is...Ch. 19 - Nerve cells and R - C circuits. The portion of a...Ch. 19 - In a simple model of an axon conducting a nerve...Ch. 19 - Nerve cells and R-C circuits. The portion of a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
45. A nurse approaches his patient and counts 72 heartbeats in 1 min. Show that the frequency and period of the...
Conceptual Physical Science (6th Edition)
5. (II) V is a vector 24.8 units in magnitude and points at an angle of 23.4° above the negative axis, (a) Sket...
Physics: Principles with Applications
Q13.20 Many people believe that orbiting astronauts feel weightless because they are “beyond the pull of the ea...
University Physics (14th Edition)
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective (8th Edition)
A ball rebounds elastically from the floor. What doesthis situation share with the ideas of momentum conservati...
Modern Physics
Write each number in scientific notation.
5. 826.4
Applied Physics (11th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Lightbulb A is marked 25.0 W 120. V, and lightbulb B is marked 100. W 120. V. These labels mean that each lightbulb has its respective power delivered to it when it is connected to a constant 120.-V source. (a) Find the resistance of each lightbulb. (b) During what time interval does 1.00 C pass into lightbulb A? (c) Is this charge different upon its exit versus its entry into the lightbulb? Explain. (d) In what time interval does 1.00 J pass into lightbulb A? (e) By what mechanisms does this energy enter and exit the lightbulb? Explain. (f) Find the cost of running lightbulb A continuously for 30.0 days, assuming the electric company sells its product at 0.110 per kWh.arrow_forwardLightbulb A is rated at 120 V and 100 W for household applications. Lightbulb B is rated at 12 Vand 100 W for automotive applications. In 2 hr , how much charge passes through each bulb? Express your answer using two significant figures. Enter your answers numerically separated by a comma. In 2 hrhr , how much energy does each bulb use? Express your answer using two significant figures. Enter your answers numerically separated by a comma. Which bulb requires larger diameter wires to connect its power source and the bulb?arrow_forwardIf you touch the terminal of a battery, the small area of contact means that the skin resistance will be relatively large; 50 kΩ is a reasonable value. What current will pass through your body if you touch the two terminals of a 9.0 V battery with your two hands? Will you feel it? Will it be dangerous?arrow_forward
- A 100 μF defibrillator capacitor is charged to 1500 V. When fired through a patient's chest, it loses 95% of its charge in 40 ms. What is the resistance of the patient's chest?arrow_forwardLightbulb A is marked “25.0 W 120. V,” and lightbulb B ismarked “100. W 120. V.” These labels mean that each lightbulbhas its respective power delivered to it when it is connected toa constant 120. - V source. (a) Find the resistance of each lightbulb.(b) During what time interval does 1.00 C pass into lightbulbA? (c) Is this charge different upon its exit versus its entryinto the lightbulb? Explain. (d) In what time interval does1.00 J pass into lightbulb A? (e) By what mechanisms does thisenergy enter and exit the lightbulb? Explain. (f ) Find the costof running lightbulb A continuously for 30.0 days, assumingthe electric company sells its product at $0.110 per kWh.arrow_forwardA defibrillation unit used to electrically stimulate the heart muscles following a heart attack consistsa 20-µF capacitor charged by a 6000-V potential difference. (a) Calculate the energy released whenthe defibrillator is discharged through the body. (b) How much charge is released? A 0.20-µF capacitor is to be charged through a resistor so that it becomes 63 percent charged in0.10 s. What should the resistance of the capacitor be? (b) What is the time constant if the capacitoris charged through a 20-MΩ resistor?arrow_forward
- Question #20. A capacitor is charged almost instantly when connected to battery. What happened if a resistor is connected in series with the capacitor? R1 C1 R V1 C (+ |arrow_forwardCalculate how many electrons pass per second through a conductive wire connected to a 100W lamp at 127 V. Repeat calculations for a 100 W lamp at 220 V.arrow_forwardYou bought a 60.0 V battery, 20.0 0, 60.0 0, and 103.0 0 resistors. You decide to connect them in parallel and wish to calculate the current (in A) through each resistor and power(in W) dissipated by each resistor. (a) Calculate the equivalent resistance in the parallel circuit. Reav (b) Calculate the currents (in A) and the power (in W)for each resistor. I20.0 A A P20.0 0 = I50.0 A A P60.0 0 103.0 0 = A P103.0 0 Warrow_forward
- The potential difference across a resting neuron in the human body is about 75.0 mV and carries a current of about 0.200 mA. How much power does the neuron release? How many electrons will flow in a resting neuron?arrow_forwardFigure P18.19 shows a circuit diagram. (R1 = 1490 2, R2 = 420 , AV = 28.0 V) 1 000 N R, 30.0 V AV 2 000 ? 20.0 V Figure P18.19 (a) Determine the current. mA (b) Determine the potential of wire A relative to ground. V (c) Determine the voltage drop across the 1490 2 resistor. Varrow_forwardThe following table gives the electric potential difference VT across the terminals of a battery as a function of current i being drawn from the battery. (a) Write an equation that represents the relationship between VT and i. Enter the data into your graphing calculator and perform a linear regression fit of VT versus i. From the parameters of the fit, find (b) the battery’s emf and (c) its internal resistance. i(A): 50.0 75.0 100 125 150 175 200 VT(V): 10.7 9.00 7.70 6.00 4.80 3.00 1.70arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
DC Series circuits explained - The basics working principle; Author: The Engineering Mindset;https://www.youtube.com/watch?v=VV6tZ3Aqfuc;License: Standard YouTube License, CC-BY