2. A coaxial capacitor has radii a = 4 cm and b = 12 cm. If...
2. A coaxial capacitor has radii a = 4 cm and b = 12 cm. If the
space between the plates is filled with an inhomogeneous dielectric
with εr = (ρ + 2.5)/ρ, where ρ is in meters, find the capacitance
per meter of the capacitor.
Homework Answers
2) Consider a coaxial capacitor with two concentric metal cylinders of radii a and b (a...
2) Consider a coaxial capacitor with two concentric metal cylinders of radii a and b (a < b), filled with a dielectric material whose permittivity e varies linearly from ea at r = a to Ep at r = b. a. Find the capacitance per unit length. b. Find the numerical value of the capacitance if the radii are 2 mm and 6 mm and the relative dielectric constant varies from 2.25 to 8.5, respectively.
7.U)A cylindrical capacitor of length L consists of coaxial conducting surfaces of radii a and b...
7.U)A cylindrical capacitor of length L consists of coaxial conducting surfaces of radii a and b (Fig. 4). The dielectric material between the surfaces has a relative permittivity s, 2+(4/r) for a <r< b. (a) Determine the capacitance of this capacitor. (b) Find the electrostatic energy stored in the dielectric region. (Neglect the fringing of the electric field at the edge.) (1490) If the constant electric field in Fig. 5 has a magnitude Eo, calculate the totala electric flux through...
A parallel plate capacitor has square plates of dimensions 5 times 5 cm and separation 2...
A parallel plate capacitor has square plates of dimensions 5 times 5 cm and separation 2 mm. The space between the plates is filled with a material of dielectric constant K= 4. The charges on the plates are plusminus 5 times 10^-8 C. Find: the capacitance; the potential difference between the plates; the magnitude of the electric field between the plates; the electric energy density between the plates; and the total electric energy.
A parallel plate capacitor has plates of area A = 5.50 ✕ 10−2 m2 separated by...
A parallel plate capacitor has plates of area A = 5.50 ✕ 10−2 m2 separated by distance d = 1.32 ✕ 10−4 m. (The permittivity of free space is ε0 = 8.85 ✕ 10−12 C2/(N · m2).) (a) Calculate the capacitance (in F) if the space between the plates is filled with air. . What is the capacitance (in F) if the space is filled half with air and half with a dielectric of constant κ = 3.10 as in...
A certain parallel plate capacitor has plate area A = 400 cm^2 and separation between the...
A certain parallel plate capacitor has plate area A = 400 cm^2
and separation between the plates is d=0.1 mm. The space between
the plates is filled with a material that has dielectric constant k
=3.0, for this material resistivity = 2 x 10^8 ohm m. A 12 volt
battery is connected across the capacitor. Draw circuit diagram.
Determine
(a) charge on the capacitor;
(b) resistance between the plates
( c ) current that leaks through the capacitor. (the leakage...
Problem 4 A certain parallel plate capacitor has plate area A = 400 cm^2 and separation...
Problem 4 A certain parallel plate capacitor has plate area A = 400 cm^2 and separation between the plates is d=0.1 mm. The space between the plates is filled with a material that has dielectric constant k =3.0, for this material resistivity = 2 x 1018 ohm m. A 12 volt battery is connected across the capacitor. Draw circuit diagram. Determine (a) charge on the capacitor; (b) resistance between the plates (c) current that leaks through the capacitor. (the leakage...
The figure at the right is two coaxial metal cylinders L(m) long with radii a(m) and...
The figure at the right is two coaxial metal cylinders L(m) long with radii a(m) and b(m), with a < b. The space between the cylinders is filled with air (k = 1.000). (Here a, b << L). Using the four steps that were demonstrated in class, determine the capacitance. Complete the steps below. Assume a charge Q on the metal plates of the capacitor. Determine an expression for the electric field E(a < r < b): Determine an expression...
An air-filled parallel plate capacitor with a plate spacing of 1.90 cm has a capacitance of...
An air-filled parallel plate capacitor with a plate spacing of 1.90 cm has a capacitance of 4.10 μF. The plate spacing is now doubled and a dielectric is inserted, completely filling the space between the plates. As a result the capacitance becomes 16.9 μF. Calculate the dielectric constant of the inserted material.
A parallel-plate capacitor has plates of area 3.55×10−4 m2 A) What plate separation is required if...
A parallel-plate capacitor has plates of area 3.55×10−4 m2 A) What plate separation is required if the capacitance is to be 1490 pF ? Assume that the space between the plates is filled with air? (Dielectric constant for air is 1.00059) B) What plate separation is required if the capacitance is to be 1490 pF ? Assume that the space between the plates is filled with paper. (Dielectric constant for paper is 3.7)
A parallel plate capacitor has square plates with sides of length 11 cm. The distance between...
A parallel plate capacitor has square plates with sides of length 11 cm. The distance between the plates is 2 mm. The plates are charged up to 20volts. Part A What is the electric field between the plates? Express your answer using three significant figures. Electric field = N/C Part B What is the amount of charge on each plate? charge = C Part C What is the capacitance? Capacitance = μF Part D What is the energy stored by...
2) Consider a coaxial capacitor with two concentric metal cylinders of radii a and b (a < b), filled with a dielectric material whose permittivity e varies linearly from ea at r = a to Ep at r = b. a. Find the capacitance per unit length. b. Find the numerical value of the capacitance if the radii are 2 mm and 6 mm and the relative dielectric constant varies from 2.25 to 8.5, respectively.
7.U)A cylindrical capacitor of length L consists of coaxial conducting surfaces of radii a and b (Fig. 4). The dielectric material between the surfaces has a relative permittivity s, 2+(4/r) for a <r< b. (a) Determine the capacitance of this capacitor. (b) Find the electrostatic energy stored in the dielectric region. (Neglect the fringing of the electric field at the edge.) (1490) If the constant electric field in Fig. 5 has a magnitude Eo, calculate the totala electric flux through...
A parallel plate capacitor has square plates of dimensions 5 times 5 cm and separation 2 mm. The space between the plates is filled with a material of dielectric constant K= 4. The charges on the plates are plusminus 5 times 10^-8 C. Find: the capacitance; the potential difference between the plates; the magnitude of the electric field between the plates; the electric energy density between the plates; and the total electric energy.
A certain parallel plate capacitor has plate area A = 400 cm^2
and separation between the plates is d=0.1 mm. The space between
the plates is filled with a material that has dielectric constant k
=3.0, for this material resistivity = 2 x 10^8 ohm m. A 12 volt
battery is connected across the capacitor. Draw circuit diagram.
Determine
(a) charge on the capacitor;
(b) resistance between the plates
( c ) current that leaks through the capacitor. (the leakage...
Problem 4 A certain parallel plate capacitor has plate area A = 400 cm^2 and separation between the plates is d=0.1 mm. The space between the plates is filled with a material that has dielectric constant k =3.0, for this material resistivity = 2 x 1018 ohm m. A 12 volt battery is connected across the capacitor. Draw circuit diagram. Determine (a) charge on the capacitor; (b) resistance between the plates (c) current that leaks through the capacitor. (the leakage...
The figure at the right is two coaxial metal cylinders L(m) long with radii a(m) and b(m), with a < b. The space between the cylinders is filled with air (k = 1.000). (Here a, b << L). Using the four steps that were demonstrated in class, determine the capacitance. Complete the steps below. Assume a charge Q on the metal plates of the capacitor. Determine an expression for the electric field E(a < r < b): Determine an expression...
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