Compact “ultracapacitors” with capacitance values up toseveral thousand farads are now commercially available.One application for ultracapacitors is in providing power forelectrical circuits when other sources (such as a battery) areturned off. To get an idea of how much charge can be storedin such a component, assume a 1200-F ultracapacitor isinitially charged to 12.0 V by a battery and is then disconnected from the battery. If charge is then drawn off the platesof this capacitor at a rate of say 1.0 mC /s, to power thebackup memory of some electrical device, how long (in days)will it take for the potential difference across this capacitorto drop to 6.0 V?

Q: new 1.5-V AAA battery has a “capacity” (not capacitance) of 1100 mA·h. What does this “capacity”…

A: Charge q =It

Q: Suppose you are given several capacitors whose capacitances are within the range 12 to 40 nF. You…

A: You are given sevaral capacitors whose capacitances are within the range 12 to 40 nF.You connect…

Q: Construct Your Own Problem. Consider a battery used to supply energy to a cellular phone. Construct…

A: Generally the capacity of the battery of a smart phone is 3000 mAh. The voltage is 12 V.  The energy…

Q: Three capacitors each of capacitance 9 pF are connected in series.(a) What is the total capacitance…

A: Given,

Q: Three capacitors are joined as shown in the figure, C1 = 6.8 μF, C2 = 6.2 μF, C3 = 5.9 μF. The…

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Q: Three capacitors having capacitances of 8.4, 8.4, and 4.2 mFare connected in series across a 36 V…

A: The capacitance of the three capacitors are given as, C1 = 8.4 mF (or) C1 = 8.4×10-3 F C2 = 8.4 mF…

Q: If two capacitors having capacitances of 3 μF and 5 μF respectively are connected in series across a…

A:

Q: The immediate cause of many deaths is ventricularfibrillation, an uncoordinated quivering of the…

A: Write the expression for potential difference using the energy stored in the capacitor

Q: A 2.5 µF capacitor is charged to 21 V. After charging, the capacitor is disconnected from the…

A: Given, The capacitance of the known capacitor: C1 = 2.5 µF (call it capacitor 1) The potential to…

Q: The drcult in the figure below contains a 9.00 v battery and four capacitors. The two capacitors on…

A: The capacitance of the each capacitors are given as, C1 = 29.40 μF (or) C1 = 29.40×10-6 F C2 = 29.40…

Q: The capacitor is made up of two parallel plates, with dimensions 80 mm by 63 mm, that are 20 cm…

A: Given data The dimension of the capacitor is A = L x B = 80 mm x 63 mm = 0.08 m x 0.063 m The…

Q: Two capacitors, c, = 6.00 µF and C, = 9.0 µF, are connected in parallel, and the resulting…

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Q: Two capacitors, C1 = 6.18 µF and C2 = 3.22 µF, are connected in parallel, then the combination is…

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Q: Two capacitors, C₂ = 23.0 pF and C₂ - 37.0 µF, are connected in series, and a 24.0-V battery is…

A: Given data, Capacitances are given c1=23 μF, c2=37 μF. Supply voltage V = 24 V.

Q: A 190-pF capacitor and a 760-pF capacitor are both charged to 1.30 kV. They are then disconnected…

A: Given: Capacitance for first: 190-pF The capacitance of second: 760-pF Potential: 1.30kV To find:…

Q: The figure shows an open switch, a battery of potential difference V, a current-measuring meter A,…

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Q: A 1.6 µF capacitor and a 4.2 µF capacitor are connected in parallel across a 270 V potential…

A: Given: Capacitor C1=1.6 μF and C2=4.2 μF connected in parallel combination. The potential difference…

Q: A 20.0 mF capacitor is charged to a potential differenceof 800 V. The terminals of the charged…

A: To find:  The final potential difference across each capacitor.

Q: For most purposes, we store electrical energy in batteries. But there are drawbacks to batteries:…

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Q: A capacitor is to be built which will store enough energy to light a 75 W light bulb for 15 min. If…

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Q: Two capacitors, C1 = 16.0 µF and C2 = 45.0 µF, are connected in series, and a 6.0-V battery is…

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Q: A circuit in Figure consists of paralel-plate capacitors with and without dielectrics. Dielectric…

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Q: Capacitors C1 = 6.0 µF and C2 = 2.0 µF are charged as a parallelcombination across a 250 - V…

A: Given:C1 = 6 μFC2 = 2 μFApplied voltage = 250 VGiven:C1 = 6 μFC2 = 2 μFApplied voltage = 250…

Q: Two capacitors, one that has a capacitance of 3.90 µF and one that has a capacitance of 11.9 µF, are…

A: (a) The potential difference across the capacitor 3.90 μF is, V1=QC1=CVC1=C1C2C1+C2VC1=(15.0…

Q: A 175-pF capacitor is connected in series with an unknowncapacitor, and as a series combination they…

A: C1 = 175 pC  q = 125pC  V = 25 V

Q: Using a 10 V power supply and two unknown capacitors (C, and C2), a PHY-102 students conducted the…

A: A capacitor is an electronic component that is used to store charge (and hence the electric energy)…

Q: A 20.0 mF capacitor is charged to a potential differenceof 800 V. The terminals of the charged…

A: The potential difference =800v  To find the decrease in energy when the capacitors are connected

Q: Two capacitors, C1 = 5.92 µF and C2 = 3.30 µF, are connected in parallel, then the combination is…

A:

Q: You have a 12-V battery, and three capacitors, C₁ = 5.67 µF, C₂ = 18.4 μF, and C3 = 16.1 μF. Wired…

A: Solution:-Given thaV=12 VC1=5.67 μFC2=18.4 μFC3=16.1 μF

Q: Two capacitors, C, = 22.0 uF and C, = 35.0 uF, are connected in series, and a 21.0-V battery is…

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Q: 1.5-uF capacitor in a television set is charged by a 22,000-V potential difference. To prevent harm…

A: 1.5-uF capacitor in a television set is charged by a 22,000-V potential difference. To preventharm…

Q: The crcu inthe fgure bekw contains a 00V batery wd four capacitors. in the tep perae trarch, there…

A: SOlution: Given that C1 = 4 micro F C3 = 2 micro F C2 = 9 micro F C4 = 6 micro F voltage = 90 V

Q: 5. (a) What would be capacitance of a parallel plate capacitor if it has charge of 20 μC and voltage…

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Q: For the figure shown if the capacitors are connected to a 9V battery 6.00 µF 8.00 µF 2.00 µF 8.00 µF…

A: We are given a circuit of 4 capacitors and 1 battery.  We need to determine equivalent capacitance…

Q: >) Enter an expression for the potential difference between the capacitor plates af of the…

A: Given that,                 The area of the plate capacitor is A.                 The EMF of the…

Q: Using a 10 V power supply and two unknown capacitors (C and C2), a PHY-102 students conducted the…

A:

Q: Two capacitors, C1 =18.0 µF and C2 = 36.0 µF, are connected in series, and a 12.0-V battery is…

A: Given:C1 = 18 μFC2 = 36 μFApplied voltage = 12 V

Q: Suppose you have a 9.00 V battery, a 2.00uF capacitor, and a 7.40uF capacitor. (a) Find the charge…

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Q: A 50-pF capacitor and a 200-pF capacitor are both charged to 3.70 kV. They then disconnected from…

A: Given data: Capacitance: C1=50 pF=50×10-12F;  C1=200 pF=200×10-12F Voltage, V=3.70 kV=3.7×103V

Q: The flash unit in a camera uses a special circuit to “step up” the 6.0V from the batteries to 500V,…

A: Given:  Power = P = 1×106 WTime taken to discharge = t = 20μs = 20×10-6 secVoltage = 500…

Q: total energy in joules stored in the capacitors

A: Given: Capacitor C1=2.7 μF and C2=5.4 μF connected in parallel combination. The potential difference…

Q: Two capacitors, C1 = 18.0 μF and C2 = 36.0 μF, are connected in series, and a 12.0-V battery is…

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Q: Two capacitors with capacitances of 1.0 and 0.5 µF, respectively, are connected in parallel. The…

A: In a parallel connection, the voltage remains the same. So, both capacitors will have the same…

Q: Two capacitors, C1 = 5.92 µF and C2 = 3.30 µF, are connected in parallel, then the combination is…

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Q: A 1.8 µF capacitor and a 3.9 µF capacitor are connected in parallel across a 240 V potential…

A: GivenVoltage V = 240 VCapacitanceC1 = 1.8 x 10-6 FC2 = 3.9 x 10-6 FSolutionThe energy stored in a…

Q: equivalent capacitance

A: The circuit diagram is given and we will find equivalent capacitance and charge on each capacitor.

Q: Two capacitors, C1 = 17.0 ?F and C2 = 30.0 ?F, are connected in series, and a 18.0-V battery is…

A: Given: Capacitor,C1=17μF=17×10-6FCapacitor,C2=30μF=30×10-6FPotential Difference,V=18V Capacitors are…

Q: A 0.8 µF capacitor is charged to 15 V. After charging, the capacitor is disconnected from the…

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Combination of Capacitors

The connection of capacitors can be established in a circuit in two ways.