A capacitor is constructed out of two 1€ coins facing each other in air at a distance of 0.5mm and connected to a voltage source of VS = 9V.
Note: € is the symbol of the European currency as $ is the symbol of the US currency.
The permittivity of vacuum is 
The relative permittivity of distilled water is 
A. What is the formula to find the energy stored in the capacitor?
B. If the medium between the coins is air and its capacitance is 7.52pF, what is the energy stored in the capacitor?
C. Which of these formulas will help you find the diameter of the 1€ coin?
D. The medium between the coins is still air and the capacity is again 7.52pF.
What is the diameter of a 1€ coin?
E. If the capacitor (capacitance in air = 7.52pF) is immersed in distilled water, what is the capacitance then?
F. If the capacitor (capacitance in air = 7.52pF) is immersed in distilled water, what energy is then stored in the capacitor?
G. We take the coins out of the water again and have them back in air. We exchange the 1€ coins with 2€ coins and measure a capacitance of 9.22pF. Are the 2€ coins larger, smaller, or of the same size as the 1€ coins? Explain!
Homework Answers
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A capacitor is constructed out of two 1€ coins facing each other
in air at a...
Constants Part A When an air capacitor with a capacitance of 330 nF (1 nF 109...
Constants Part A When an air capacitor with a capacitance of 330 nF (1 nF 109 F) is connected to a power supply, the energy stored in the capacitor is 1.75x10-5J. While the capacitor is kept connected to the power supply, a slab of dielectric is inserted that completely fills the space between the plates. This increases the stored energy by 2.72x 10-5 J What is the potential difference between the capacitor plates? V-10.3 V Previous Answers Correct Part B...
Name: ET-3601 Homework for chapter 10. 1. Find the capacitance of a parallel plate capacitor if...
Name: ET-3601 Homework for chapter 10. 1. Find the capacitance of a parallel plate capacitor if 1200uC of charge are deposited on its plates when 24V are applied across the plates. 2. Find the Capacitance of a parallel plate capacitor if the area of each plate is 0.1m and the distance of each plate is 0.1 inch. The dielectric is air. 3. Referring to p.454, # 19 (in your text book), what is the time constant of figure 10.94 if...
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When an air capacitor with a capacitance of 380 nF (1 nF = 10−9F) is connected to a power supply, the energy stored in the capacitor is 2.05×10−5 J . While the capacitor is kept connected to the power supply, a slab of dielectric is inserted that completely fills the space between the plates. This increases the stored energy by 2.36×10−5 J . What is the potential difference between the capacitor plates? What is the dielectric constant of the slab?
Task 3 a) The capacitor having a capacitance of 10 uF is applied with a potential...
Task 3 a) The capacitor having a capacitance of 10 uF is applied with a potential difference which is increased uniformly from 0 to 600 V in 2 seconds. It is then maintained constant at 600 V for 1 second and subsequently decreased uniformly to zero in five seconds. 1) Plot a graph showing the variation of current during these 8 seconds. ii) Calculate the total charge and the energy stored in the capacitor when the terminal voltage is 600...
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1- Capacitor B has half of the capacitor A. Compare the load of capacitor A with capacitor B charge when the two capacitors remain connected in series with a battery for a long time. 2- A capacitor immersed in the air has capacitance equal to 12.5 μF when the potential difference at its terminals is 24.0V. If we insert a constant material dielectric equal to 3.75 between the capacitor plates, filling the space between them completely, (a) how much energy...
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1. Two parallel plates, each of area 5.17 cm2, are separated by 4.90 mm. The space between the plates is filled with air. A voltage of 4.75 V is applied between the plates. Calculate the magnitude of the electric field between the plates. 2. Calculate the amount of the electric charge stored on each plate. 3. Now distilled water is placed between the plates and the capacitor is charged up again to the same voltage as before. Calculate the magnitude...
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016 (part 1 of 3) 10.0 points An air-filled capacitor consists of two parallel plates, each with an area of 4.65 cm, sepa- rated by a distance of 1.66 mm. A 17.7 V potential difference is applied to these plates. Find the magnitude of the electric field be- tween the plates. The permittivity of free space is 8.8542 x 10 12 c /N-m2 Answer in units of kV/m. 017 (part 2 of 3) 10.0 points Find the capacitance. Answer in...
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(1490) Problem 1: A parallel-plate capacitor is constructed from two square sheets of aluminum foil. each of dimensions 0.24 m × .24 m. The plates are separated by an air gap of 2.4 mm. 33% Part (a) Calculate the capacitance of the capacitor. in picofarads. Grade Summary 090 100% Potential Submissions Attempts remaining: 0 (0% per attempt) detailed view sin0 tanO ( cos cotanasin acos atan acotan0sinh0 cosh0tanh0cotanh0 Degrees Radians CLEAR Submit Hint I give up! Hints: 0% deduction per...
003 (part 1 of 2) 10.0 points Consider an air-filled parallel plate capacitor with plate area...
003 (part 1 of 2) 10.0 points Consider an air-filled parallel plate capacitor with plate area A and gap width d and plate charge What is the total energy stored in the ca pacitor? 2 0 A Eo d Eo A d 2 0 A d 4. U = 004 (part 2 of 2) 10.0 points With the battery connected, fill the gap by a slab with the dielectric constant 3.6. If the potential is 30 V, the plate sep-...
Constants Part A When an air capacitor with a capacitance of 330 nF (1 nF 109 F) is connected to a power supply, the energy stored in the capacitor is 1.75x10-5J. While the capacitor is kept connected to the power supply, a slab of dielectric is inserted that completely fills the space between the plates. This increases the stored energy by 2.72x 10-5 J What is the potential difference between the capacitor plates? V-10.3 V Previous Answers Correct Part B...
Name: ET-3601 Homework for chapter 10. 1. Find the capacitance of a parallel plate capacitor if 1200uC of charge are deposited on its plates when 24V are applied across the plates. 2. Find the Capacitance of a parallel plate capacitor if the area of each plate is 0.1m and the distance of each plate is 0.1 inch. The dielectric is air. 3. Referring to p.454, # 19 (in your text book), what is the time constant of figure 10.94 if...
Task 3 a) The capacitor having a capacitance of 10 uF is applied with a potential difference which is increased uniformly from 0 to 600 V in 2 seconds. It is then maintained constant at 600 V for 1 second and subsequently decreased uniformly to zero in five seconds. 1) Plot a graph showing the variation of current during these 8 seconds. ii) Calculate the total charge and the energy stored in the capacitor when the terminal voltage is 600...
016 (part 1 of 3) 10.0 points An air-filled capacitor consists of two parallel plates, each with an area of 4.65 cm, sepa- rated by a distance of 1.66 mm. A 17.7 V potential difference is applied to these plates. Find the magnitude of the electric field be- tween the plates. The permittivity of free space is 8.8542 x 10 12 c /N-m2 Answer in units of kV/m. 017 (part 2 of 3) 10.0 points Find the capacitance. Answer in...
(1490) Problem 1: A parallel-plate capacitor is constructed from two square sheets of aluminum foil. each of dimensions 0.24 m × .24 m. The plates are separated by an air gap of 2.4 mm. 33% Part (a) Calculate the capacitance of the capacitor. in picofarads. Grade Summary 090 100% Potential Submissions Attempts remaining: 0 (0% per attempt) detailed view sin0 tanO ( cos cotanasin acos atan acotan0sinh0 cosh0tanh0cotanh0 Degrees Radians CLEAR Submit Hint I give up! Hints: 0% deduction per...
003 (part 1 of 2) 10.0 points Consider an air-filled parallel plate capacitor with plate area A and gap width d and plate charge What is the total energy stored in the ca pacitor? 2 0 A Eo d Eo A d 2 0 A d 4. U = 004 (part 2 of 2) 10.0 points With the battery connected, fill the gap by a slab with the dielectric constant 3.6. If the potential is 30 V, the plate sep-...
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