College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
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Chapter 20, Problem 83GP
To determine
The separation between the rods when they come to rest.
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X COE
Question 4
Finish attempt..
The figure shows, in cross section, several conductors that carry currents through
the plane of the figure. The currents have the magnitudes I, = 4 A,l2 = 6 A, and I3 = 2 A,
and the directions shown. Four paths, labeled a through d, are shown.
Not yet
answered
Marked out of
What is the line integral OB.dL for the path b
2.00
P Flag question
1,0
d.
Select one:
1.01 x 10 Tm
2.14 x 10 T.m
-5.03 x 105 Tm
2.51 x 10-6T.m
None of these is correct
3.01 x 10 Tm
X.
The capacitor in the circuit shown below is initially uncharged. The switch is closed at t = 0 s. AV battery = 30 V, C = 3.0 F, and R = 2.0
2. At sometime after the switch is closed, the current in the circuit is measured to be 9.3 A. What is the charge on the capacitor at this
time, in Coulomb?
Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the
answer is positive. No unit is needed in your answer, it is already given in the question statement.
You know that Wires 1 and 2 are a distance, d = 0.81 m, apart and that
they carry the same current, I = 18.7 A, in opposite directions.
You also know that Wires 2 and 3 are a distance, x = 2.43 m, apart.
What you don't know, but really need to find out, is...
"How much current flows through Wire 3 -- and which way?"
You would just measure the current, if your ammeter wasn't broken.
Then you remembered the magnetometer that the Tooth Fairy left
under your pillow last year, and realized that you could deduce the
current in Wire 3 from the measured magnetic field strength!
(b) Calculate the magnetic force per unit length that acts on the new wire.
N/m x
FB on 3 = 2.946e-6
L
(c) Will Wire #3 be attracted or repelled by the other two?
attract
left
O repel
out
(a) Using the magnetometer, you determined that the magnetic field midway between Wires 2 and 3 was 2.9 μT,
and that it pointed straight upwards. What then is the size and direction of the current flowing through wire 3?
13 = 7.657
Ax…
Chapter 20 Solutions
College Physics (10th Edition)
Ch. 20 - If an electron beam in a cathode-ray tube travels...Ch. 20 - Why is it not a good idea to call magnetic field...Ch. 20 - If the magnetic force does no work on a charged...Ch. 20 - A permanent magnet can be used to pick up a string...Ch. 20 - Streams of charged particles emitted from the sun...Ch. 20 - A student once proposed to obtain an isolated...Ch. 20 - The magnetic force on a moving charged particle is...Ch. 20 - The text discusses the magnetic field of an...Ch. 20 - Two parallel conductors carrying current in the...Ch. 20 - Household wires (such as lamp cords) often carry...
Ch. 20 - Can a charged particle move through a magnetic...Ch. 20 - Prob. 12CQCh. 20 - An electron traveling with a speed v enters a...Ch. 20 - A beam of protons is directed horizontally into...Ch. 20 - A wire carrying a current in the direction shown...Ch. 20 - A solenoid is connected to a battery as shown in...Ch. 20 - Two very long, straight, parallel wires carry...Ch. 20 - A light circular wire suspended by a thin silk...Ch. 20 - An electron is moving di'ectly toward you in a...Ch. 20 - Three particles having the same mass and the same...Ch. 20 - A metal bar connected by metal leads to the...Ch. 20 - A certain current produces a magnetic field 8 near...Ch. 20 - A coil is connected to a battery as shown in...Ch. 20 - A particle enters a uniform magnetic field...Ch. 20 - In a 1.25 T magnetic field directed vertically...Ch. 20 - An ion having charge +6e is traveling horizontally...Ch. 20 - A proton traveling at 3 60 km/s suddenly enters a...Ch. 20 - A particle having a mass of 0.195 g carries a...Ch. 20 - At a given instant, a particle with a mass of 5.00...Ch. 20 - If the magnitude of the magnetic force on a proton...Ch. 20 - A particle with mass 3 102 kg and charge +5 C...Ch. 20 - A particle with a charge of 2.50 108 C is moving...Ch. 20 - A particle with mass 1.81 103 kg and a charge of...Ch. 20 - Prob. 10PCh. 20 - Prob. 11PCh. 20 - An electron moves at 2.50 106 m/s through a...Ch. 20 - In a cloud chamber- experiment, 3 proton enters a...Ch. 20 - An alpha particle (a He nucleus, containing two...Ch. 20 - A deuteron particle (the nucleus of an isotope of...Ch. 20 - A beam of protons traveling at 1.20 km/s enters a...Ch. 20 - A uniform magnetic field bends an electron in a...Ch. 20 - 18. An electron at point A in Figure 20.59 has a...Ch. 20 - Prob. 19PCh. 20 - A 3.25 g bullet picks up an electric charge of...Ch. 20 - An electron travels into a 0.3 magnetic field...Ch. 20 - Prob. 22PCh. 20 - Singly ionized (one electron removed) atoms are...Ch. 20 - Ancient meat eating. The amount of meat in...Ch. 20 - A straight vertical wire carries a current of 1.20...Ch. 20 - Magnetic force on a lightning bolt. Currents...Ch. 20 - A horizontal rod 0.200 m long carries a current...Ch. 20 - A straight 2.5 m wire carries a typical household...Ch. 20 - A magnetic field is used to suspend a wire of mass...Ch. 20 - A rectangular 10.0 cm by 20.0 cm circuit carrying...Ch. 20 - A long wire carrying a 6.00 A current reverses...Ch. 20 - As long wire carrying 4.50 A or current makes two...Ch. 20 - The 20.0 cm by 35.0 cm rectangular circuit shown...Ch. 20 - Prob. 34PCh. 20 - A circular coil of wire 8.6 cm in diameter has 15...Ch. 20 - A coil having 165 turns and a radius of 1.2 cm...Ch. 20 - A circular coil of 50 loops and diameter 20.0 cm...Ch. 20 - You want to produce a magnetic field of magnitude...Ch. 20 - Household magnetic fields. Home circuit breakers...Ch. 20 - (a) How large a current would a very long,...Ch. 20 - Currents in the heart. The body contains many...Ch. 20 - Magnetic sensitivity of electric fish. Electric...Ch. 20 - A jumper cable is used to start a car that has a...Ch. 20 - If the magnetic field due to a long, straight,...Ch. 20 - A long, straight wire carries a current l0 and...Ch. 20 - EMF. Currents in dc transmission lines can be 100...Ch. 20 - A long, straight telephone cable contains six...Ch. 20 - Two insulated wires perpendicular to each other in...Ch. 20 - Two long straight parallel wires are 10.0 cm apart...Ch. 20 - Set Up: B=0l2r The direction of BB is given by the...Ch. 20 - Two high-current transmission lines carry currents...Ch. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - An electric bus operates by drawing current from...Ch. 20 - A circular metal loop is 22 cm in diameter, (a)...Ch. 20 - A closely wound circular coil with a diameter of...Ch. 20 - A closely wound circular coil has a radius of 6.00...Ch. 20 - BIO Currents in the brain. The magnetic field...Ch. 20 - A closely wound, circular coil with radius 2.40 cm...Ch. 20 - Two circular concentric loops of wire lie on a...Ch. 20 - Calculate the magnitude and direction of the...Ch. 20 - A solenoid contains 750 coils of very thin wire...Ch. 20 - As a new electrical technician, you are designing...Ch. 20 - A solenoid is designed to produce a 0.0279 T...Ch. 20 - As shown in Figure 20.67, a single circular...Ch. 20 - A solenoid that is 35 cm long and contains 450...Ch. 20 - You have 25 m of wire, which you want to use to...Ch. 20 - A toroidal solenoid (see Figure 20.42) has inner...Ch. 20 - Three long, straight electrical cables, running...Ch. 20 - A long, straight, cylindrical wire of radius R...Ch. 20 - Platinum is a paramagnetic metal having a relative...Ch. 20 - When a certain paramagnetic material is placed in...Ch. 20 - A 150 g ball containing 4.00 108 excess electrons...Ch. 20 - Magnetic balance. The circuit shown in Figure...Ch. 20 - A thin 50.0-cm-long metal bar with mass 750 g...Ch. 20 - 76. A long, straight wire containing a...Ch. 20 - A singly charged an of Li (on isotope of lithium...Ch. 20 - An insulated circular ring of diameter 6.50 cm...Ch. 20 - The effect of transmission lines. Two hikers are...Ch. 20 - DATA A current-carrying wife of length 0.15 m is...Ch. 20 - Two very long, straight wires carry currents as...Ch. 20 - Prob. 82GPCh. 20 - Prob. 83GPCh. 20 - Prob. 84GPCh. 20 - A long wire carrying 6.50 A of current makes two...Ch. 20 - BIO Magnetic fields and MRI. Magnetic resonance...Ch. 20 - Prob. 87PPCh. 20 - The large magnetic fields used in MRI can produce...Ch. 20 - BIO Studying magnetic bacteria. Some types of...Ch. 20 - To use a larger sample of bacteria, the...Ch. 20 - BIO Studying magnetic bacteria. Some types of...
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