A parallel-plate air-filled capacitor has a capacitance of 335
pF. If each of its plates has...
A parallel-plate air-filled capacitor has a capacitance of 335
pF. If each of its plates has an area of 0.025
m2, what is the separation? If the region
between the plates is now filled with germanium, what is the
capacitance?
A parallel-plate capacitor has capacitance C = 15.7 pF
when the volume between the plates is filled with air. The plates
are circular, with radius 2.50 cm. The capacitor is connected to a
battery and a charge of magnitude 28.0 pC goes into each plate.
With the capacitor still connected to the battery, a slab of
dielectric is inserted between the plates, completely filling the
space between the plates. After the dielectric has been inserted,
the charge on each plate...
An air-filled parallel plate capacitor has a capacitance of 4.40
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 16.2 μF.
a. Calculate the dielectric constant of the inserted
material.
b. If the original capacitor was charged to a potential
difference of 6.0 V and the battery was disconnected when the
modifications to the capacitor was made, by what factor did the
energy stored...
The plates of an air-filled parallel-plate capacitor with a
plate area of 15.0 cm2 and a separation of 8.95 mm are
charged to a 170-V potential difference. After the plates are
disconnected from the source, a porcelain dielectric with
κ = 6.5
is inserted between the plates of the capacitor.
(a) What is the charge on the capacitor before and after the
dielectric is inserted?
Qi
=
C
Qf
=
C
(b) What is the capacitance of the capacitor after...
An air-filled parallel-plate capacitor has a capacitance of 2.0
F when the plate spacing is 1.6 mm. (a) What is the area of the
plates? (b) What is the maximum voltage Vmax that can be applied to
this capacitor (before dielectric breakdown occurs)? (c) How much
charge is stored on the capacitor when Vmax is across it? (d) How
much energy is stored on the capacitor when Vmax is across it? (e)
A piece of Plexiglas (with a dielectric constant...
A parallel plate, air filled capacitor, has plates of area 0.82
m2 and a separation of 0.040 mm.
(a) Find the capacitance.
(b) If a voltage of 25 volts is applied to the capacitor, what is
the magnitude of the charge on each plate?
(c) What is the energy stored in the capacitor?
Now the plates are filled with strontium titanate having a
dielectric constant of 310 and a dielectric strength of 8.0
kV/mm.
(d) What is the new value...
A 1.2 nF parallel-plate capacitor has an air gap between its plates. Its capacitance increases by 3.0 nF when the gap is filled by dielectric. What is the dielectric constant of that dielectric?
An air-filled parallel-plate capacitor has plates of area 2.50 cm2 separated by 1.00 mm. The capacitor is connected to a 24.0-V battery. (a) Find the value of its capacitance._______ pF (b) What is the charge on the capacitor? _______ pC (c) What is the magnitude of the uniform electric field between the plates? _______ V/m
A parallel-plate capacitor with circular plates and a
capacitance of 10.3 μF is connected to a battery which provides a
voltage of 11.2 V .
What is the charge on each plate?
How much charge would be on the plates if their separation were
doubled while the capacitor remained connected to the battery?
How much charge would be on the plates if the capacitor were
connected to the battery after the radius of each plate was doubled
without changing their...
The parallel-plates in a capacitor, with a plate area 1.2×10−3
cm2 and an air-filled separation of 10 mm, are charged by a 12 V
battery. They are then disconnected from the battery and pushed
together (without discharge) to a separation of 3.5 mm.
(a) Find the initial potential difference between the plates and
the initial stored energy. (6 points)
(b) Find the final potential difference between the plates and
the final stored energy. (6 points)
(c) How much work is...
The plates of an isolated parallel plate capacitor with a
capacitance C carry a charge Q. The plate separation
is d. Initially, the space between the plates contains only
air. Then, an isolated metal sheet of thickness 0.5d is
inserted between, but not touching, the plates. How does the
potential difference between the plates change as a result of
inserting the metal sheet?
2. A research Van de Graaff generator has a 2.00-m-diameter
metal sphere with a charge of 5.00...