If I charge a capacitor to 12 V. I disconnect it from the battery, then carefully...
If I charge a capacitor to 12 V. I disconnect it from the battery, then carefully remove its dielectric material (ε=2ε0)
•What Happens? and why?
please explain in details
Homework Answers
Once you disconnect it from battery the charge on capacitor
cannot change There is no path for it to flow so charge will remain
same now
C=KE0A/d
if you remove dielectric then its Capacitance is reduced as K =1
for vacum or air and for dielectric K>>1
V=Q/C,
Q is same and C is decreased so V increases
Electric field=V/d
since, d is same and V is increased so electric field is
increased.
Add Answer to:
If I charge a capacitor to 12 V. I disconnect it from the
battery, then carefully...
You charge a parallel plate capacitor with a battery, then disconnect the battery. What happens to...
You charge a parallel plate capacitor with a battery, then disconnect the battery. What happens to the charge on the plates? You then connect a wire between the plates; what happens to the charge on the plates?
A battery is used to charge a parallel-plate capacitor so that the magnitude of the potential...
A battery is used to charge a parallel-plate capacitor so that the magnitude of the potential difference between its plates is 16.0 V. The capacitor is disconnected from the battery (so the amount of charge on each plate cannot change), and a material with a dielectric constant of 3.49 is inserted between the plates. Find the new potential difference between the plates.
A circuit consists of a 6-pif capacitor, a 12 m-F capacitor, a 12-V battery, and a...
A circuit consists of a 6-pif capacitor, a 12 m-F capacitor, a 12-V battery, and a switch, connected as shown in Figure 24-14. Initially, the switch is open and the capacitors are uncharged. The switch is then closed and the capacitors charge. When the capacitors are fully charged and open-circuit terminal volt- age is restored, (a) what is the potential of each conductor in the circuit? (Choose the zero-potential reference point on the negative battery terminal.) If the potential of...
A parallel-plate capacitor with air between its plates is connected to an 80.0 V battery. When...
A parallel-plate capacitor with air between its plates is connected to an 80.0 V battery. When fully charged, the capacitor has an energy of 130 nJ. Without disconnecting the battery, a slab of dielectric is inserted between the plates of the capacitor, fully filling the gap. The energy stored in the capacitor is now 410 nJ. (c) What is the dielectric constant of the dielectric? (d) What is the charge on the dielectric-filled capacitor?
Capacitor C1 is connected across a battery of 5 V. An identical capacitor C2 is connected...
Capacitor C1 is connected across a battery of 5 V. An identical capacitor C2 is connected across a battery of 10 V. A dielectric of dielectric constant / is inserted in the gap of C1. What must / be to have the same charge on both capacitors A) 4 B) 2 C) 1.5
An empty capacitor is connected to a 12.4-V battery and charged up. The capacitor is then...
An empty capacitor is connected to a 12.4-V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (κ = 2.9) is inserted between the plates. Find the magnitude of the amount by which the potential difference across the plates changes.
A capacitor is connected to a battery until it has charge Q. It is then disconnected...
A capacitor is connected to a battery until it has charge Q. It is then disconnected from the battery, maintaining its charge. A dielectric material is introduced between the plates. Which of the following is true? A) The capacitance and the charge increase. B) The charge increases and the potential difference increases. C) The capacitance, charge, and potential difference increase. D) The capacitance increases and the potential difference decreases. E) The capacitance is constant and the potential difference decreases.
You have a parallel-plate capacitor connected to a 12V battery. You charge it up such that...
You have a parallel-plate capacitor connected to a 12V battery. You charge it up such that it holds a certain amount of potential energy. You then replace the 12V battery with a 24V battery. What is one change you could make such that it will store the same amount of potential energy that the 12V battery did? a. increase the separation between the plates by a factor of 2 b. increase the separation between the plates by a factor of...
An empty capacitor is connected to a 11.9-V battery and charged up. The capacitor is then...
An empty capacitor is connected to a 11.9-V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (Κ-3.9) is inserted between the plates. Find the amount by which the potential difference across the plates changes Specify whether the change is an increase or a decrease increase decrease
A 1.2 µF capacitor, initially uncharged, is connected in series to a 12 V ideal battery...
A 1.2 µF capacitor, initially uncharged, is connected in series to a 12 V ideal battery and a 5 kΩ resistor. (a) What is the charge on the capacitor after a very long time? ( b) Derive expressions describing the evolution of the electric charge and of the current in time (Q(t) and I(t)). (c) How long does it take the capacitor to reach 95% of its final charge?
A circuit consists of a 6-pif capacitor, a 12 m-F capacitor, a 12-V battery, and a switch, connected as shown in Figure 24-14. Initially, the switch is open and the capacitors are uncharged. The switch is then closed and the capacitors charge. When the capacitors are fully charged and open-circuit terminal volt- age is restored, (a) what is the potential of each conductor in the circuit? (Choose the zero-potential reference point on the negative battery terminal.) If the potential of...
An empty capacitor is connected to a 11.9-V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (Κ-3.9) is inserted between the plates. Find the amount by which the potential difference across the plates changes Specify whether the change is an increase or a decrease increase decrease
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago