PHYSICS F/SCI.+ENGINEERS-ACCESS
4th Edition
ISBN: 9780131992269
Author: GIANCOLI
Publisher: PEARSON
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Textbook Question
Chapter 23.2, Problem 1AE
CHAPTER-OPENING QUESTION—Guess now!
Consider a pair of parallel plates with equal and opposite charge densities, σ. Which of the following actions will increase the voltage between the plates (assuming fixed charge density)?
- (a) Moving the plates closer together.
- (b) Moving the plates apart.
- (c) Doubling the area of the plates.
- (d) Halving the area of the plates.
Expert Solution & Answer
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Students have asked these similar questions
1. what will be your charge if you scrape your feet while scuffing across the rug?
2. How do particles with the same charge react?
3. What are the two ways of charging? Briefly explain each way.
4. Why does a rubbed inflated balloon when brought near your arm, but not touching it, causes the hairs on your arm to raise?
TRUE OR FALSE
ANSWER 10 AND 12
10.The chain seen dangling from the rear of a gasoline truck is to let excess charges on the truck to be grounded.
12.It is important to avoid sharp edges or points on conductors used in high-voltage equipment because a sharp point on a charged conductor would produce a large electric field in the region near the point and an electric discharge could most easily take place at the point.
Part 1: In 1909 Robert Millikan was the first to findthe charge of an electron in his now-famousoil drop experiment. In the experiment tinyoil drops are sprayed into a uniform electricfield between a horizontal pair of oppositelycharged plates. The drops are observed witha magnifying eyepiece, and the electric field isadjusted so that the upward force q E on somenegatively charged oil drops is just sufficientto balance the downward force m g of gravity.Millikan accurately measured the charges onmany oil drops and found the values to bewhole-number multiples of 1.6 × 10−19 C —the charge of the electron. For this he wonthe Nobel Prize.If a drop of mass 1.82857 × 10−13 kgremains stationary in an electric field of7 × 105 N/C, what is the charge on this drop?The acceleration due to gravity is 9.8 m/s 2.Answer in units of C.
Part 2: How many extra electrons are on this particular oil drop (given the presently known chargeof the electron)?
Chapter 23 Solutions
PHYSICS F/SCI.+ENGINEERS-ACCESS
Ch. 23.2 - CHAPTER-OPENING QUESTIONGuess now! Consider a pair...Ch. 23.2 - On a dry day, a person can become electrically...Ch. 23.3 - What is the potential at a distance of 3.0cm from...Ch. 23.3 - Consider the three pairs of charges, Q1, and Q2,...Ch. 23.8 - Prob. 1EECh. 23.8 - The kinetic energy of a 1000-kg automobile...Ch. 23 - If two points are at the same potential, does this...Ch. 23 - If a negative charge is initially at rest in an...Ch. 23 - State clearly the difference (a) between electric...Ch. 23 - An electron is accelerated by a potential...
Ch. 23 - Can a particle ever move from a region of low...Ch. 23 - If V = 0 at a point in space, must E=0? If E=0 at...Ch. 23 - When dealing with practical devices, we often take...Ch. 23 - Can two equipotential lines cross? Explain.Ch. 23 - Draw in a few equipotential lines in Fig, 2134b...Ch. 23 - What can you say about the electric field in a...Ch. 23 - A satellite orbits the Earth along a gravitational...Ch. 23 - Suppose the charged ring of Example 238 was not...Ch. 23 - Consider a metal conductor in the shape of a...Ch. 23 - Equipotential lines are spaced 1.00 V apart. Does...Ch. 23 - A conducting sphere carries a charge Q and a...Ch. 23 - At a particular location, the electric field...Ch. 23 - Equipotential lines are spaced 1.00 V apart. Does...Ch. 23 - If the electric field E is uniform in a region,...Ch. 23 - Is the electric potential energy of two unlike...Ch. 23 - (I) What potential difference is needed to stop an...Ch. 23 - (I) How much work does the electric field do in...Ch. 23 - (I) An electron acquires 5.25 1016 J of kinetic...Ch. 23 - (II) The work done by an external force to move a...Ch. 23 - (I) Thunderclouds typically develop voltage...Ch. 23 - (I) The electric field between two parallel plates...Ch. 23 - (I) What is the maximum amount of charge that a...Ch. 23 - (I) What is the magnitude of the electric field...Ch. 23 - (I) What minimum radius must a large conducting...Ch. 23 - (II) A manufacturer claims that a carpet will not...Ch. 23 - (II) A uniform electric field E=4.20N/Ci points in...Ch. 23 - (II) The electric potential of a very large...Ch. 23 - (II) The Earth produces an inwardly directed...Ch. 23 - (II) A 32-cm-diameter conducting sphere is charged...Ch. 23 - (II) An insulated spherical conductor of radius r1...Ch. 23 - (II) Determine the difference in potential between...Ch. 23 - (II) Suppose the end of your finger is charged....Ch. 23 - (II) Estimate the electric field in the membrane...Ch. 23 - (II) A nonconducting sphere of radius r0 carries a...Ch. 23 - (III) Repeat Problem 19 assuming the charge...Ch. 23 - (III) The volume charge density E within a sphere...Ch. 23 - (III) A hollow spherical conductor, carrying a net...Ch. 23 - (III) A very long conducting cylinder (length ) of...Ch. 23 - (I) A point charge Q creates an electric potential...Ch. 23 - (I) (a) What is the electric potential 0.50 1010...Ch. 23 - (a) Because of the inverse square nature of the...Ch. 23 - (II) +25C point charge is placed 6.0 cm from an...Ch. 23 - (II) Point a is 26 cm north of a 3.8 C point...Ch. 23 - (II) How much voltage must be used to accelerate a...Ch. 23 - (II) Two identical +5.5 C point charges are...Ch. 23 - (II) An electron starts from rest 42.5cm from a...Ch. 23 - (II) Two equal but opposite charges are separated...Ch. 23 - (II) A thin circular ring of radius R (as in Fig....Ch. 23 - (II) Three point charges are arranged at the...Ch. 23 - (II) A flat ring of inner radius R1 and outer...Ch. 23 - (II) A total charge Q is uniformly distributed on...Ch. 23 - (II) A 12.0-cm-radius thin ring carries a...Ch. 23 - (II) A thin rod of length 2 is centered on the x...Ch. 23 - (II) Determine the potential V(x) for points along...Ch. 23 - (III) The charge on the rod of Fig. 2331 has a...Ch. 23 - (III) Suppose the flat circular disk of Fig. 2315...Ch. 23 - (I) Draw a conductor in the shape of a football....Ch. 23 - (II) Equipotential surfaces are to be drawn 100 V...Ch. 23 - (II) A metal sphere of radius r0 = 0.44 m carries...Ch. 23 - (II) Calculate the electric potential due to a...Ch. 23 - (III) The dipole moment, considered as a vector,...Ch. 23 - (I) Show that the electric field of a single point...Ch. 23 - (I) What is the potential gradient just outside...Ch. 23 - (II) The electric potential between two parallel...Ch. 23 - () The electric potential in a region of space...Ch. 23 - (II) In a certain region of space, the electric...Ch. 23 - (II) A dust particle with mass of 0.050 g and a...Ch. 23 - (III) Use the results or Problems 38 and 39 to...Ch. 23 - (I) How much work must be done to bring three...Ch. 23 - (I) What potential difference is needed to give a...Ch. 23 - (I) What is the speed of (a) a 1.5-keV (kinetic...Ch. 23 - (II) Many chemical reactions release energy....Ch. 23 - (II) An alpha particle (which is a helium nucleus,...Ch. 23 - (II) Write the total electrostatic potential...Ch. 23 - (II) Four equal point charges, Q, are fixed at the...Ch. 23 - (II) An electron starting from rest acquires 1.33...Ch. 23 - (II) Determine the total electrostatic potential...Ch. 23 - (II) The liquid-drop model of the nucleus suggests...Ch. 23 - (III) Determine the total electrostatic potential...Ch. 23 - (I) Use the ideal gas as a model to estimate the...Ch. 23 - (III) Electrons are accelerated by 6.0kV in a CRT....Ch. 23 - (III) In a given CRT, electrons are accelerated...Ch. 23 - If the electrons in a single raindrop, 3.5 mm in...Ch. 23 - By rubbing a nonconducting material, a charge of...Ch. 23 - Sketch the electric field and equipotential lines...Ch. 23 - A +33 C point charge is placed 36 cm from an...Ch. 23 - At each corner of a cube of side there is a point...Ch. 23 - In a television picture tube (CRT), electrons are...Ch. 23 - Four point charges are located at the corners of a...Ch. 23 - In a photocell, ultraviolet (UV) light provides...Ch. 23 - An electron is accelerated horizontally from rest...Ch. 23 - Three charges are at the corners of an equilateral...Ch. 23 - Near the surface of the Earth there is an electric...Ch. 23 - A lightning flash transfers 4.0 C of charge and...Ch. 23 - Determine the components of the electric field. Ex...Ch. 23 - A nonconducting sphere of radius r2 contains a...Ch. 23 - A thin flat nonconducting disk, with radius R0 and...Ch. 23 - A Geiger counter is used to detect charged...Ch. 23 - A Van de Graaff generator (Fig. 2341) can develop...Ch. 23 - The potential in a region of space is given by V =...Ch. 23 - A charge q1 of mass m rests on the y axis at a...Ch. 23 - (II) A dipole is composed of a 1.0 nC charge at x...Ch. 23 - (II) A thin flat disk of radius R0 carries a total...Ch. 23 - (III) You are trying to determine an unknown...
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