
Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 21, Problem 19PCE
(a)
To determine
The resistance per meter length of gold wire.
(b)
To determine
Whether the resistance per meter increase, decrease or remain same when the diameter of the wire is increased.
(c)
To determine
The resistance of the gold wire for per meter length.
Expert Solution & Answer

Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In (Figure 1) C1 = 6.00 μF, C2 = 6.00 μF, C3 = 12.0 μF, and C4 = 3.00 μF. The capacitor network is connected to an applied potential difference Vab. After the charges on the capacitors have reached their final values, the voltage across C3 is 40.0 V. What is the voltage across C4? What is the voltage Vab applied to the network? Please explain everything in steps.
I need help with these questions again. A step by step working out with diagrams that explains more clearly
In a certain region of space the electric potential is given by V=+Ax2y−Bxy2, where A = 5.00 V/m3 and B = 8.00 V/m3. Calculate the direction angle of the electric field at the point in the region that has cordinates x = 2.50 m, y = 0.400 m, and z = 0. Please explain. The answer is not 60, 120, or 30.
Chapter 21 Solutions
Physics (5th Edition)
Ch. 21.1 - Enhance Your Understanding 1. The following...Ch. 21.2 - Enhance Your Understanding 2. If the voltage and...Ch. 21.3 - Enhance Your Understanding 3. In the following...Ch. 21.4 - The two circuits shown in Figure 21-17 have...Ch. 21.5 - Prob. 5EYUCh. 21.6 - Do two capacitors give a larger equivalent...Ch. 21.7 - Give a symbolic expression for the current that...Ch. 21 - Your body is composed of electric charges. Does it...Ch. 21 - Suppose you charge a comb by rubbing it through...Ch. 21 - An electron moving through a wire has an average...
Ch. 21 - Are car headlights connected in series or...Ch. 21 - Is it possible to connect a group of resistors of...Ch. 21 - What physical quantity do resistors connected in...Ch. 21 - What physical quantity do resistors connected in...Ch. 21 - Explain how electrical devices can begin operating...Ch. 21 - Explain the difference between resistivity and...Ch. 21 - Explain why birds can roost on high-voltage wires...Ch. 21 - Consider the circuit shown in Figure 21-36, in...Ch. 21 - A flashlight bulb carries a current of 0.38 A for...Ch. 21 - Predict/Calculate A car battery does 360 J of work...Ch. 21 - Highly sensitive ammeters can measure currents as...Ch. 21 - A television set connected to a 120-V outlet...Ch. 21 - BIO Pacemaker Batteries Pacemakers designed for...Ch. 21 - A conducting wire is quadrupled in length and...Ch. 21 - Figure 21-37 shows a plot of current versus...Ch. 21 - Predict/Explain Current-versus-voltage plots for...Ch. 21 - Prob. 9PCECh. 21 - When a potential difference of 12 V is applied to...Ch. 21 - Prob. 11PCECh. 21 - Prob. 12PCECh. 21 - Transcranial Direct-Current Stimulation In a tDCS...Ch. 21 - The four conducting cylinders shown in Figure...Ch. 21 - Predict/Calculate A bird lands on a bare copper...Ch. 21 - Prob. 16PCECh. 21 - Predict/Calculate BIO Current Through a Cell...Ch. 21 - Prob. 18PCECh. 21 - Prob. 19PCECh. 21 - BIO Resistance and Current in the Human Finger The...Ch. 21 - If a potential difference V is maintained between...Ch. 21 - Light A has four times the power rating of light B...Ch. 21 - Two lightbulbs operate on the same potential...Ch. 21 - Problems and Conceptual Exercises Section 21-3...Ch. 21 - A 65-V generator supplies 4.8 kW of power. How...Ch. 21 - A portable CD player operates with a current of 18...Ch. 21 - Find the power dissipated in a 22- electric heater...Ch. 21 - The current in a 120-V reading lamp is 2.6 A. If...Ch. 21 - Circuit A in a house has a voltage of 208 V and is...Ch. 21 - Predict/Calculate A 65-W lightbulb operates on a...Ch. 21 - Rating Car Batteries Car batteries are rated by...Ch. 21 - Predict/Explain A dozen identical lightbulbs are...Ch. 21 - A circuit consists of three resistors, R1 R2 R3,...Ch. 21 - Predict/Explain Two resistors are connected in...Ch. 21 - What is the minimum number of 88- resistors that...Ch. 21 - Find the equivalent resistance between points A...Ch. 21 - A 9.00-V battery is connected across the terminals...Ch. 21 - Holiday Lights In a string of holiday lights, 50...Ch. 21 - Your toaster has a power cord with a resistance of...Ch. 21 - Prob. 40PCECh. 21 - Predict/Calculate Three resistors, 11, 53 , and R,...Ch. 21 - A circuit consists of a battery connected to three...Ch. 21 - Predict/Calculate Three resistors, 22 , 67 , and...Ch. 21 - Prob. 44PCECh. 21 - The equivalent resistance between points A and B...Ch. 21 - Find the equivalent resistance between points A...Ch. 21 - How many 23-W lightbulbs can be connected in...Ch. 21 - The circuit in Figure 21-43 includes a battery...Ch. 21 - Predict/Calculate A 12-V battery is connected to...Ch. 21 - Predict/Calculate The terminals A and B in Figure...Ch. 21 - Predict/Calculate Suppose the battery in Figure...Ch. 21 - Predict/Calculate The current flowing through the...Ch. 21 - Predict/Calculate Four identical resistors are...Ch. 21 - Find the magnitude and direction (clockwise or...Ch. 21 - Predict/Calculate Suppose the polarity of the...Ch. 21 - Predict/Calculate It is given that point A in...Ch. 21 - Consider the circuit shown in Figure 21-47. Find...Ch. 21 - Suppose point A is grounded (V = 0) in Figure...Ch. 21 - Predict/Calculate (a) Find the current in each...Ch. 21 - Two batteries and three resistors are connected as...Ch. 21 - Two capacitors, C1 = C and C2 = 2C, are connected...Ch. 21 - Predict/Explain Two capacitors are connected in...Ch. 21 - Predict/Explain Two capacitors are connected in...Ch. 21 - A 252-F capacitor is connected in series with a...Ch. 21 - A 36-F capacitor is connected in parallel with an...Ch. 21 - Find the equivalent capacitance between points A...Ch. 21 - A 15-V battery is connected to three capacitors in...Ch. 21 - Three different circuits, each containing a switch...Ch. 21 - Terminals A and B in Figure 21-50 are connected to...Ch. 21 - Predict/Calculate You would like to add a second...Ch. 21 - Two capacitors, one 7.5 F and the other 15 F, are...Ch. 21 - The equivalent capacitance of the capacitors shown...Ch. 21 - With the switch in position A, the 11.2-F...Ch. 21 - The switch on an RC circuit is closed at t = 0....Ch. 21 - The capacitor in an RC circuit (R = 120 , C = 45...Ch. 21 - Three RC circuits have the emf, resistance, and...Ch. 21 - Consider an RC circuit with = 12.0 V, R = 195 ,...Ch. 21 - The resistor in an RC circuit has a resistance of...Ch. 21 - A flash unit for a camera has a capacitance of...Ch. 21 - Figure 21-54 shows a simplified circuit for a...Ch. 21 - Nerve Impulse Propagation The speed with which...Ch. 21 - Predict/Calculate Consider the RC circuit shown in...Ch. 21 - CE Consider the circuit shown in Figure 21-56, in...Ch. 21 - CE Predict/Explain (a) Referring to Problem 83 and...Ch. 21 - CE Consider the circuit shown in Figure 21-57, in...Ch. 21 - CE Predict/Explain (a) When the switch is closed...Ch. 21 - Suppose that points A and B in Figure 21-41 are...Ch. 21 - CE The circuit shown in Figure 21-58 shows a...Ch. 21 - CE The three circuits shown in Figure 21-59 have...Ch. 21 - Electrical Safety Codes For safety reasons,...Ch. 21 - A portable CD player uses a current of 7.5 mA at a...Ch. 21 - An electrical heating coil is immersed in 6.6 kg...Ch. 21 - Predict/Calculate Consider the circuit shown in...Ch. 21 - Prob. 94GPCh. 21 - BIO Pacemaker Pulses A pacemaker sends a pulse to...Ch. 21 - Three resistors (R,12R,2R) are connected to a...Ch. 21 - Predict/Calculate Suppose we connect a 12.0-V...Ch. 21 - National Electric Code In the United States, the...Ch. 21 - Solar Panel Power The current-versus-voltage plot...Ch. 21 - Predict/Calculate A 15.0-V battery is connected to...Ch. 21 - When two resistors, R1 and R2, are connected in...Ch. 21 - The circuit shown in Figure 21-62 is known as a...Ch. 21 - BIO Footwear Safety The American National...Ch. 21 - BIO Footwear Safety The American National...Ch. 21 - BIO Footwear Safety The American National...Ch. 21 - The standard specifies that footwear should be...Ch. 21 - Referring to Example 21-13 Suppose the three...Ch. 21 - Referring to Example 21-13 Suppose R1 = R2 = 225 ...Ch. 21 - Predict/Calculate Referring to Example 21-18...Ch. 21 - Predict/Calculate Referring to Example 21-18...
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
- An infinitely long line of charge has linear charge density 4.00×10−12 C/m . A proton (mass 1.67×10−−27 kg, charge +1.60×10−19 C) is 18.0 cm from the line and moving directly toward the line at 4.10×103 m/s . How close does the proton get to the line of charge?arrow_forwardat a certain location the horizontal component of the earth’s magnetic field is 2.5 x 10^-5 T due north A proton moves eastward with just the right speed so the magnetic force on it balances its weight. Find the speed of the proton.arrow_forwardExample In Canada, the Earth has B = 0.5 mT, pointing north, 70.0° below the horizontal. a) Find the magnetic force on an oxygen ion (O) moving due east at 250 m/s b) Compare the |FB| to |FE| due to Earth's fair- weather electric field (150 V/m downward).arrow_forward
- Three charged particles are located at the corners of an equilateral triangle as shown in the figure below (let q = 2.20 µC, and L = 0.810 m). Calculate the total electric force on the 7.00-µC charge. What is the magnitude , what is the direction?arrow_forward(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 9.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge has the very large value 2.00 mC. How many electrons are added for every 109 electrons already present?arrow_forward(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 13.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.arrow_forward
- 8 Two moving charged particles exert forces on each other because each creates a magnetic field that acts on the other. These two "Lorentz" forces are proportional to vix (2 xr) and 2 x (vi x-r), where is the vector between the particle positions. Show that these two forces are equal and opposite in accordance with Newton's third law if and only if rx (vi × 2) = 0.arrow_forward6 The force = +3 + 2k acts at the point (1, 1, 1). Find the torque of the force about (a) (b) the point (2, -1, 5). Careful about the direction of ŕ between the two points. the line = 21-+5k+ (i-+2k)t. Note that the line goes through the point (2, -1, 5).arrow_forward5 Find the total work done by forces A and B if the object undergoes the displacement C. Hint: Can you add the two forces first?arrow_forward
- 1 F2 F₁ -F₁ F6 F₂ S A Work done on the particle as it moves through the displacement is positive. True False by the force Farrow_forwardA student measuring the wavelength produced by a vapour lamp directed the lightthrough two slits with a separation of 0.20 mm. An interference pattern was created on the screen,3.00 m away. The student found that the distance between the first and the eighth consecutive darklines was 8.0 cm. Draw a quick picture of the setup. What was the wavelength of the light emittedby the vapour lamp?arrow_forwardA ball is tied to one end of a string. The other end of the string is fixed. The ball is set in motion around a vertical circle without friction. At the top of the circle, the ball has a speed of ; = √√ Rg, as shown in the figure. At what angle should the string be cut so that the ball will travel through the center of the circle? The path after string is cut Rarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegeCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning


College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning

Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher: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:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College

College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning