PHYSICS F/SCI.+ENGINEERS W/MOD.PHYSICS
5th Edition
ISBN: 9780321992277
Author: GIANCOLI
Publisher: PEARSON
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(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 5.00 cm2 ? (b) Find the maximum charge if polystyrene is used between the plates instead of air. Assume the dielectric strength of air is 3.00 x 106 V/m and that ofpolystyrene is 24.0 x 106 V/m.
(9) A nonconducting infinite sheet of positive charge is located vertically, as shown in Figure. The
electric field of magnitude 3×104 V/m. The potential difference AV= Vba =V₁-Va between two points a
of coordinates (0.1m, 0.1m) and b of coordinates (0.4m,0.3m) is:
(a) -1.2 kV;
(b) - 0.6×104 V;
(c) - 9 kV;
(d) 9×104 V.
++
(i) Use Gauss’s law to find the electric field due to a uniformly charged infinite plane sheet. What is the direction of field for positive and negative charge densities?
(ii) Find the ratio of the potential differences that must be applied across the parallel and series combination of two capacitors Cj and C2 with their capacitances in the ratio 1 : 2 so that the energy stored in the two cases becomes the same.
Chapter 24 Solutions
PHYSICS F/SCI.+ENGINEERS W/MOD.PHYSICS
Ch. 24.1 - Graphs for charge versus voltage are shown in Fig....Ch. 24.2 - Two circular plates of radius 5.0 cm are separated...Ch. 24.2 - What is the capacitance per unit length of a...Ch. 24.3 - Consider two identical capacitors C1 = C2 = 10 F....Ch. 24.5 - Return to the Chapter-Opening Question, page 628,...Ch. 24 - Suppose two nearby conductors carry the same...Ch. 24 - Suppose the separation of plates d in a...Ch. 24 - Suppose one of the plates of a parallel-plate...Ch. 24 - When a battery is connected to a capacitor, why do...Ch. 24 - Describe a sample method of measuring 0 using a...
Ch. 24 - Suppose three identical capacitors are connected...Ch. 24 - A large copper sheet of thickness is placed...Ch. 24 - The parallel plates of an isolated capacitor carry...Ch. 24 - If the voltage across a capacitor is doubled, the...Ch. 24 - An isolated charged capacitor has horizontal...Ch. 24 - Suppose a battery remains connected to the...Ch. 24 - How does the energy stored in a capacitor change...Ch. 24 - For dielectrics consisting of polar molecules, how...Ch. 24 - A dielectric is pulled out from between the plates...Ch. 24 - We have seen that the capacitance C depends on the...Ch. 24 - What value might we assign to the dielectric...Ch. 24 - Prob. 5MCQCh. 24 - Prob. 6MCQCh. 24 - Prob. 9MCQCh. 24 - Prob. 11MCQCh. 24 - Prob. 12MCQCh. 24 - Prob. 13MCQCh. 24 - Prob. 1PCh. 24 - Prob. 2PCh. 24 - Prob. 3PCh. 24 - Prob. 4PCh. 24 - Prob. 5PCh. 24 - Prob. 6PCh. 24 - Prob. 7PCh. 24 - Prob. 8PCh. 24 - Prob. 9PCh. 24 - Prob. 10PCh. 24 - Prob. 11PCh. 24 - Prob. 12PCh. 24 - Prob. 13PCh. 24 - Prob. 14PCh. 24 - Prob. 15PCh. 24 - Prob. 16PCh. 24 - Prob. 17PCh. 24 - Prob. 18PCh. 24 - Prob. 19PCh. 24 - Prob. 20PCh. 24 - Prob. 21PCh. 24 - Prob. 22PCh. 24 - Prob. 24PCh. 24 - Prob. 25PCh. 24 - Prob. 26PCh. 24 - Prob. 27PCh. 24 - Prob. 28PCh. 24 - Prob. 29PCh. 24 - Prob. 31PCh. 24 - Prob. 32PCh. 24 - Prob. 33PCh. 24 - Prob. 34PCh. 24 - Prob. 35PCh. 24 - Prob. 36PCh. 24 - Prob. 37PCh. 24 - Prob. 38PCh. 24 - Prob. 39PCh. 24 - Prob. 40PCh. 24 - Prob. 41PCh. 24 - Prob. 42PCh. 24 - Prob. 43PCh. 24 - Prob. 44PCh. 24 - Prob. 45PCh. 24 - Prob. 49PCh. 24 - Prob. 53PCh. 24 - Prob. 54PCh. 24 - Prob. 57PCh. 24 - Prob. 58PCh. 24 - (II) Two different dielectrics fill the space...Ch. 24 - (II) Repeat Problem 60 (Fig. 2431) but assume the...Ch. 24 - Prob. 63PCh. 24 - Prob. 76GPCh. 24 - Prob. 84GPCh. 24 - Prob. 87GP
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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
- How much energy is stored by the electric field between two square plates, 8.3 cm on a side, separated by a 2.5-mm air gap? The charges on the plates are equal and opposite and of magnitude 11 nC .arrow_forward(c) Plates were fixed on the top and bottom of a cubical box with each side equal to 2 cm. A capacitor was constructed out of this box by filling it with a suitable dielectric material. In an experiment with this capacitor, the charge stored was measured and the electric field between the plates was determined as the charging potential difference was varied. The results are tabulated below. Charge stored/µC 7.5 30 60 75 90 Electric 0.5 2.0 4.0 5.0 6.0 field/Vcm-1 Plot a suitable graph which can be used to determine the dielectric strength, and hence the capacitance of the capacitor used in this experiment. Calculate the total energy stored by the capacitor when the electric field is 400 V/m.arrow_forwardII)Aparallel-platecapacitorhasfixedcharges±Qand–Q. The separation of the plates is then halved. (a) How much work must be done to reduce the plate sepa- ration from d to 12 d? The area of each plate is A.arrow_forward
- (a) Regarding the Earth and a cloud layer 750 m above the Earth as the "plates" of a capacitor, calculate the capacitance of the Earth-cloud layer system. Assume the cloud layer has an area of 1.00 km? and the air between the cloud and the ground is pure and dry. Assume charge builds up on the cloud and on the ground until a uniform electric field of 2.00 x 105 N/C throughout the space between them makes the air break down and conduct electricity as a lightning bolt. nF Enter a number. (b) What is the maximum charge the cloud can hold?arrow_forward(3) Points a and b are situated in a region of space with uniform electric field whose direction, whether along the +x-axis or -x-axis, remains to be determined; see figure below. If Vab = -5.12 V and r = 4.93 cm then the electric field is most nearly |Y a Er - (A) –104 V/m j. (B) 0.253 V/m î. (C) 104 V/m î. (D) –104 V/m î. (E) –0.253 V/m î. (4) - In the immediately preceding question, if an electron is moved from a to b, the work done by the electric field is most nearly (A) 5.12 eV. (B) 0.253 eV. (C) –104 eV. (D) 104 eV. (E) -0.253 eV.arrow_forward(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 5.00 cm2 ? (b) Find the maximum charge if polystyrene is used between the plates instead of air. Assume the dielectric strength of air is 3.00 × 106 V/m and that of polystyrene is 24.0 × 106 V/m.arrow_forward
- (II) A parallel-plate capacitor has fixed charges +Q and –Q. The separation of the plates is then halved. (a) By what factor does the energy stored in the electric field change? (b) How much work must be done to reduce the plate sepa- ration from d to d? The area of each plate is A.arrow_forward(III) How much voltage must be used to accelerate a proton(radius 1.2 x 10 -15 m) so that it has sufficient energy to just “touch” a silicon nucleus? A silicon nucleus has a charge of +14e and its radius is about 3.6 x10 -15 m Assume the potential is that for point chargesarrow_forwardIn a magnesium oxide unit, the distance between the magnesium ion (Mg2+) and the oxide ion (O2−) is 1.51×10-10 m. Calculate the work required to separate the two ions to an infinite distance apart. (Model the ions as point charges at rest before and after the separation.)arrow_forward
- A negatively charged polythene sphere of mass 3.5 × 10-15kg is held stationary between two horizontal parallel plates separated by 5.00mm and kept at a PD of 80 V.Determine the number of excess electrons on the spherearrow_forward(b) Two oppositely charged parallel plates are held 2.0 mm apart. A 8.0 x10-$ J of work is needed to move a 4 µC test charge from one plate to the other. Calculate the electric field between the plates.arrow_forward(10) A constant electric field E = 100 V/m points in the direction of the x-axis. A +0.01 C point charge, initially at rest at x = - 3 m, is released. What is its kinetic energy Kat x = + 5 m? (a) 3J (b) 5J (c) 8J (d) 0 Jarrow_forward
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