Question

A parallel plate capacitor of capacitance *C*o has plates
of area A with separation d between them. When it is connected to a
battery of voltage *V*o, it has charge of magnitude
*Q*o on its plates. It is then disconnected from the battery
and the plates are pulled apart to a separation 2*d* without
discharging them. After the plates are 2*d* apart, by what
factor does the magnitude of the charge on the plates change? By
what factor does the potential difference between the plates
change?

Answer #1

A parallel-plate capacitor with plate separation d is connected
to a battery that provides a potential difference ε. While still
connected to the battery, the plate separation is increased to
2d.
a) Does the potential difference across the capacitor change as
the separation increases? If so, then by what factor? If not, then
why not?
b) Does the capacitance change as the separation increases? If
so, then by what factor? If not, then why not?
c) Does the capacitor charge...

1)A parallel plate capacitor (denoted as Capacitor 1) has a plate
area A1
and a separation distance d1.
It is filled with a dielectric made of mylar (κ=3.1). With these
conditions, it has a capacitance C1.
A second parallel plate capacitor (denoted as Capacitor 2) has the
same plate area as the first capacitor (A1
= A2)
but the separation distance is twice as large (d1
= ½ d2).
The second capacitor is filled with the same dielectric (mylar) and...

An air-filled capacitor (with a capacitance C) consisting two
parallel plates separated by a distance d is connected to a battery
of voltage V has stored a charge Q. While it is still connected to
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V and Q, find the new value of capacitance, voltage, charge and
energy stored on the capacitor. Explain your answer. [5 marks]

1 A parallel plate capacitor is connected to a battery
and becomes fully charged the capacitor is then disconnected and
the separation between the plates is halved in such a way that so
charge leaks off As the plate separation is being halved which of
the following parameters remains constant?
An air filled k=1 ideal parallel plate capacitor has a
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dielectric material k=2 and the distance between...

A parallel-plate air capacitor is made by using two plates 18 cm
square, spaced 6.0 mm apart. It is connected to a 24-V battery.
(a) What is the capacitance?
________F
(b) What is the charge on each plate?
_______ C
(c) What is the electric field between the plates?
__________ V/m
(d) What is the energy stored in the capacitor?
________ J
(e) If the battery is disconnected and then the plates are pulled
apart to a separation of 12...

A
parallel plate capacitor of area A = 30 cm2 and separation d = 5 mm
is charged by a battery of 60-V
If the air between the plates is replaced by a dielectric of
k= 4, but the battery disconnected before the dielectric
inserted,
1) Find the capacitance of the capacitor.
2) What is the charge on the capacitor?
3) What is the energy stored in the capacitor?
please explain. Thank you

A parallel-plate capacitor is charged and then disconnected from
a battery.
Then, the plate separation is decreased by a factor of 4, d_new=1/4
d_old,
please type in a number into the box to determine how everything
changes.
(If something doesn't change, please type in 1 to answer X_new= 1
X_old.)
(a) By what fraction does the capacitance change?
C_new= C_old;
(b) By what fraction does the amount of charge change?
Q_new= Q_old (When the battery is disconnected, the
charges have no place...

16.3 Capacitance
57. MC
A capacitor is first connected to a 6.0-V battery and then
disconnected and connected to a 12.0-V battery. How does its
capacitance change: (a) It increases, (b) it decreases, or (c) it
stays the same?
58. MC
A capacitor is first connected to a 6.0-V battery and then
disconnected and connected to a 12.0-V battery. How does the charge
on one of its plates change: (a) It increases, (b) it decreases, or
(c) it stays the same?
59. MC...

A parallel plate capacitor with plate separation d is connected
to a battery. The capacitor is fully charged to Q Coulombs and a
voltage of V. (C is the capacitance and U is the stored energy.)
Answer the following questions regarding the capacitor charged by a
battery. For each statement below, select True or False.
After being disconnected from the battery, inserting a
dielectric with κ will increase U.
After being disconnected from the battery, inserting a
dielectric with κ...

A parallel-plate air capacitor of area A= 14.0 cm2
and plate separation d= 2.20 mm is charged by a battery to a
voltage 56.0 V. If a dielectric material with κ = 4.00 is inserted
so that it fills the volume between the plates (with the capacitor
still connected to the battery), how much additional charge will
flow from the battery onto the positive plate?

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