Question

A parallel-plate capacitor is constructed of plates with area 2.5 m2 that are separated by 0.5 mm of air (dielectric constant Ka = 1:0006). The capacitor is connected to a 9 V battery and fully charged. The battery is then disconnected, and quartz is inserted to ll the gap between the plates (dielectric constant Kq = 4:3). Determine whether the energy density of this capacitor increased or decreased when the quartz was inserted, and by how much.

Answer #1

A parallel plate capacitor in air is constructed with a plate
area of 7.75cm2 and a plate separation of 0.664mm.
A) Determine the value of the capacitance of this parallel plate
capacitor.
B) This capacitor is placed across a 21.0 V battery and allowed
to fully charge. What is the value of this charge with included
units.
C) When fully charged, what is the energy stored inside the
capacitor?
D) With the battery still connected, a pyrex glass dielectric
material...

1.) A parallel-plate capacitor is constructed from two circular
plates with diameter 5.0 cm separated by 0.20 mm. What charge will
collect on the plates if the capacitor is connected to a potential
difference of 35.0 V?
2.)The capacitor from the previous problem is now disconnected
from the voltage source. The separation between the capacitor
plates is quadrupled and an insulator is inserted between the
plates. The voltage between the plates is measured to be 68.3 V.
Find the dielectric...

A parallel plate capacitor is made from two plates 7 cm^2 in
area, with a plate separation of 3 mm. The capacitor is fully
charged across a 30 V battery, and then disconnected.
How much charge is on the capacitor?
Now material with a dielectric constant of 30 is inserted to
fill the space between the plates, (with the battery disconnected),
What is the charge on the capacitor?
What is the energy stored in the capacitor?
What the field between...

A parallel-plate capacitor made of half-circular plates of
radius 10 cm separated by 1.50 mm is charged to a potential
difference of 600 volts by a battery. Then a sheet of tantalum
pentoxide is pushed between the plates, completely filling the gap
between them. How much additional charge flows from the battery to
one of the plates when the tantalum pentoxide is inserted?
Dielectric constant for tantalum pentoxide: 25

A parallel-plate capacitor made of half-circular plates of
radius 10 cm separated by 1.50 mm is charged to a potential
difference of 600 volts by a battery. Then a sheet of tantalum
pentoxide is pushed between the plates, completely filling the gap
between them. How much additional charge flows from the battery to
one of the plates when the tantalum pentoxide is inserted?
Dielectric constant for some materials: tantalum pentoxide 25.

A parallel plate capacitor with a
plate area of 20.0 cm2 and plate separation of 8.00 mm
is connected to a constant potential difference of 5.00 V. A
dielectric with a dielectric constant of 4.00 is inserted between
the plates.
a) What is the energy stored in the capacitor?
b) The capacitor is disconnected from the battery and the
dielectric is removed from the interior of the capacitor. What is
the new energy of the capacitor now?
c) What does...

Consider a parallel plate capacitor with plate dimensions of 10
cm x 10 cm and a gap spacing of 2.00 cm. The capacitor is connected
to a battery supplying a voltage across the capacitor of 2.00 kV.
After the capacitor is fully charged, the battery is disconnected.
A dielectric material is then inserted into the vacuum space to
completely fill the capacitor. This result in a decrease of the
capacitor voltage to 1.00 kV.
a.Find the vacuum electric field between...

A parallel-plate capacitor made of half-circular plates of
radius 10 cm separated by 1.50 mm is charged to a potential
difference of 600 volts by a battery. Then a sheet of tantalum
pentoxide is pushed between the plates, completely filling the gap
between them. How much additional charge flows from the battery to
one of the plates when the tantalum pentoxide is inserted?
Dielectric constant for some materials: mylar 3.1 polyethylene 2.6
polyvinyldifluoride 11. tantalum pentoxide 25. Teflon 2.1

Find the capacitance of a parallel plate capacitor having plates
of area 2.70 m2 that are separated by 0.635 mm of Teflon. The
dielectric constant of Teflon is 2.1.
_______µF

A parallel plate capacitor has plates of area A =0.075
m2 separated by distance d =2.30 ✕ 10−5 m and
is attached to a battery with potential difference ΔV = 14 V.(The
permittivity of free space is εo= 8.85 ✕
10−12 C2/N·m2).
(a)Calculate the capacitance (in F) if the space between the
plates is filled with air.
(b) What is the electric field between the plates of the
capacitor?
Suppose that this capacitor is replaced with another
with capacitance C...

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