Two capacitors, one that has a capacitance of 4 µF and one that has a capacitance of 12 µF are first discharged and then are connected in series. The series combination is then connected across the terminals of a 14-V battery. Next, they are carefully disconnected so that they are not discharged and they are then reconnected to each other--positive plate to positive plate and negative plate to negative plate.
(a) Find the potential difference across each capacitor after
they are reconnected.
V (4 µF capacitor)
V (12 µF capacitor)
(b) Find the energy stored in the capacitor before they are
disconnected from the battery, and find the energy stored after
they are reconnected
µJ (before disconnected)
µJ (reconnected)
Two capacitors, one that has a capacitance of 4 µF and one that has a capacitance...
A 14-µF capacitor and a capacitor of unknown capacitance are both charged to 3.25 kV. After charging, the two capacitors are disconnected from the voltage source. The capacitors are then connected to each other--positive plate to negative plate and negative plate to positive plate. The final voltage across the terminals of the 14-µF capacitor is 1.00 kV. a)What is the capacitance of the second capacitor? b)How much energy is dissipated when the connection was made?
Two capacitors, C1 = 27.0 µF and C2 = 30.0 µF, are connected in series, and a 15.0-V battery is connected across the two capacitors. (a) Find the equivalent capacitance. µF (b) Find the energy stored in this equivalent capacitance. J (c) Find the energy stored in each individual capacitor. capacitor 1 J capacitor 2 J (d) Show that the sum of these two energies is the same as the energy found in part (b). (e) Will this equality always...
Three capacitors having capacitances of 8.0 µF, 8.6 µF, and 4.1 µF are connected in series across a 36-V potential difference. (A) What is the charge on the 4.1μF capacitor? ( Express your answer using two significant figures ) i tried to find it and my answers was : ( 7.5*10^2 ) , ( 745 ) , ( 17 ) , ( 74 ) , ( 74.2 ) all are wrong :( (B) What is the total energy stored in...
A potential difference V = 4.200×102V is
applied to two capacitors connected in series. One capacitor, C1,
is 4.60 ?F and the other, C2, is 7.50 ?F.
The charged capacitors are disconnected carefully from each
other and from the battery. They are then reconnected, positive
plate to positive plate and negative plate to negative plate, with
no external voltage being applied. What is the charge on the
positive plate of C1?
What is the potential difference across C1?
What is...
Two identical parallel-plate capacitors, each with capacitance 13.0 μF, are charged to potential difference 47.5 V and then disconnected from the battery. They are then connected to each other in parallel with plates of like sign connected. Finally, the plate separation in one of the capacitors is doubled. (a) Find the total energy of the system of two capacitors before the plate separation is doubled. J (b) Find the potential difference across each capacitor after the plate separation is doubled....
Three identical isolated capacitors, each with capacitance C, are connected in parallel, with a 11.3 V potential difference across their plates. Each capacitor carries a charge of 4.60 uC. (a) Find C (b) Find the equivalent capacitance. (c) Suppose that one of the capacitors is first disconnected and then reconnected with its terminals reversed. Find the final voltage drop across the capacitors
The circuit in the figure below contains a 90.0 V battery and four capacitors. In the top parallel branch, there are two capacitors, one with a capacitance of C1 = 3.00 µF and another with a capacitance of 6.00 µF. In the bottom parallel branch, there are two more capacitors, one with a capacitance of 2.00 µF and another with a capacitance of C2 = 6.00 µF. A circuit consists of a 90.0 V battery and four capacitors. The wire...
1. Two capacitors, one with a capacitance of 1 microFarad and the other with a capacitance of 0.47 microFarads, are connected in series. A. What is the equivalent capacitance of this setup? B. If you connect a 9 Volt battery across the capacitors connected in series, how much charge will be on each plate of each capacitor? C. With the 9 Volt battery connected, what is the potential difference across each capacitor?
2. A student connects three capacitors G = 4.50 pF,C2 = 5.20 uF, C3 = 6.20 uF to a 6.00 V battery. a. The three capacitors are connected in series across the battery. i. Find the equivalent capacitance of the circuit. ii. Calculate the total charge stored in the combination. b. The three capacitors are now connected in parallel. i. What is equivalent capacitance? ii. What is the energy stored by the combination of the capacitors? 3. A graph of...
Two parallel-plate capacitors, 4.5 µF each, are connected in series to a 9.3 V battery. One of the capacitors is then squeezed so that its plate separation is halved. Because of the squeezing, (a) how much additional charge is transferred to the capacitors by the battery and (b) what is the increase in the sum of the charges: the charge on the positive plate of one capacitor plus the charge on the positive plate of the other capacitor? Give your...