A capacitor of 1µF is charged to 100 volts and then disconnected from the power supply. A second but uncharged capacitor of 3µF is then connected across the first capacitor. What is the voltage across the parallel combination? a. 110 volts O b. 45 volts O c. 66 volts O d. 25 volts

A capacitor of 1µF is charged to 100 volts and then disconnected from the power supply. A second but uncharged capacitor of 3µF is then connected across the first capacitor. What is the voltage across the parallel combination? a. 110 volts O b. 45 volts O c. 66 volts O d. 25 volts

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter19: Capacitors

Section: Chapter Questions

Problem 3PA: You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors...

See similar textbooks

Related questions

Q: (b) Determine the current through a 250 µF capacitor whose voltage is shown in Figure 2 (b) and…

Q: A car battery has gone dead and it needs to be replaced with a large capacitor. The old car battery…

A: To solve above problem, one should know capacitors and capacitance offered by a capacitor. A…

Q: What is the purpose of a capacitor? Select one: A. BOOST STARTING TORQUE B. INCREASE RUNNING…

A: A capactitor is an electronic component which stores charge in the electrical circuit for a short…

Q: In the following figure, rate the points a, b, c & d in the order of increasing Electric Potential…

A: The Order of increasing electric potential (lower potential to higher potential) is given by…

Q: current of 2.5 A flows through a series circuit consisting of a 100 Ω resistor and an unknown…

A: Impedance of series circuit can be calculated by summation of resistance and capacitive reactance.…

Q: Given the following Resistances and Inductors in Series and Voltage Source: R1 = 78 ohms R2 = 60…

Q: Voltage

Q: The capacitive reactance associated with a capacitor is 120 ohms when the frequency of the ac supply…

A: For a capacitor of capacitance C F, the capacitive reactance can be expressed as

Q: Calculate t for capacitors in parallel and series for charging and discharging

A: We need to find the time constant of the capacitors in parallel and series for charging and…

Q: A 22 mHmH coil whose resistance is 0.80 Ω is connected to a capacitor C and a 480 Hz source voltage.…

Q: B: Calculate the current and voltage drop across each element of the following circuit after switch…

Q: A constant current of 2 micro - ampere charges a capacitor for 20 seconds, how much charged is…

A: charge of capacitor Q = ∫0ti(t) dtGiven i(t) = 2 μA and time t = 20 seconds

Q: Alternating Current System A series connection of a 30-ohm resistor and a 100-mH inductor is…

Q: Part c

A: There are mainly four types of losses in photovoltaic cells: Reflection Loss: Recombination Loss:…

Q: 11. A utility company plans to connect a total of 20 µ.F of capacitance to a 7200-V line. To make…

A: Whenever we connect the capacitors in series the then equivalent capacitance will decrease Let us…

Q: Consider two capacitors C1 = 200µF and C2 = 600µF connected in parallel across a source of voltage V…

A: We need to find voltage and charge for given circuit

Q: A current of 2.5 A flows through a series circuit consisting of a 100 Ω resistor and an unknown…

A: To calculate capacitive reactance

Q: How does the internal resistance of the multimeter (in voltage setting) affect the…

A: Given: Effect of Internal resistance of the multi-meter on capacitor

Q: (b) Determine the current through a 100 µF capacitor whose voltage is shown in Figure 2 (b) and…

Q: a) Inductors_________ oppose a change of current. a) always b) sometimes c) never d) all of the…

A: a) Inductors always oppose a change of current. The magnetic flux produced by a current, I flowing…

Q: What is the property of an Inductor? a. Oppose the sudden change in voltage b. Oppose the flow of…

A: Inductor: It is a passive, two terminal electrical device. Also called as coil. It is used to store…

Q: Determine the DC currents (Ig, Ic and lĘ) and dc junction voltages (VBE, VCE and VCB) IB=Blank 1 mA,…

Q: What is the Property of an Inductor? a. Oppose the sudden change in voltage b. Oppose the flow of…

A: Voltage across inductor is given by, VL = L * di/dt Where, i = current flows through inductor For…

Q: When checked with an ohmmeter, how should a properly functioning capacitor respond

A: The explanation is as follows.

Q: 1. Explain the difference of pure resistive, pure capacitive and pure inductive circuit.

Q: Three identical capacitors of 10 micro farad are connected in delta across a 410 volts, 50HZ,…

A: Resistors, inductors and capacitors form an integral part of any electrical circuit. A source,…

Q: Given the following Resistances and Inductors in Series and Voltage Source: R1 = 14 ohms R2 = 20…

Q: 9. When a 60-volt, 60-hertz supply is connected to a capacitor, the current reads 0.6 ampere. What…

Q: 1. QUESTION 1 C3 Figure 1.1 In Figure 1.1, suppose C1 = C2 = C3 = C4 = C. a) Determine the…

A: In this answer we will find the equivalent capacitance between the terminals a-b. All the required…

Q: 1. Differentiate DC and AC voltage sources in terms of a) value of voltage, b) direction of current…

A: Given: We need to differentiate between AC and DC voltage in terms of value of voltage,direction of…

Q: What effect would the multimeter's internal resistance (in the voltage setting) have on the…

A: The multimeter work to determine the capacitance by charging the known current. that measures the…

Q: An inductor and resistor are connected in parallel to a 120-V, 60-Hz line. The resistor has a…

A: An inductor and resistor are connected in parallel we need to find the phase angle between voltage…

Q: Given the following Resistances and Inductors in Series and Voltage Source: R1 = 84 ohms %3D R2 = 13…

A: given r and l circuit

Q: Given the following Resistances and Capacitors in Series and Voltage Source: R1 = 7 ohms R2 = 9…

Q: (A) The capacitances of a 3-phase belted cable are 12-6 µF between the three cores bunched together…

A: Consider the given below diagram of the cable,

Q: What is the effect of connecting a bigger capacitor in the circuit? Comment from the result obtained…

Q: a. A capacitance is connected to a 115 V, 25 Hz mains and takes a current of 5 A. find the current…

Q: capacitor (Vc(0)=0 )that was initially empty was used in the circuits given below. How does the…

A: According to questio,

Q: Lenz stated, “A coil has an inductance of 1 _____ when a current change of 1 _____ per second…

A: Lenz's law states that, the direction of the electric current induced in a conductor by a changing…

Q: 2. A resistor in series with a capacitor absorbs 10 W when the combination is connected to a 120 –…

A: In the question, A resistor in series with a capacitor The combination is connected to a 120 – V,…

Q: capacitor is connected to a 208-volt, 60-Hz power source. An ammeter indicates a current flow of…

A: The solution can be achieved as follows.

Q: What is the Total Reactance in ohms?

Q: 4. Suspension string has 3 units. Each unit can with stand a maximum voltage of 11kV. The…

A: Given: Maximum Peak Voltage, V=11kV Number of Insulator Discs, n=3 The capacitance of each joint and…

Q: Construct and evaluate a graph to represent the recurrence of discharges in dielectric materials…

A: recurrence of discharges in dielectric materials before break down

Q: A 20 µF capacitor is changed to a voltage of 1,200 volts. It is connected terminal to terminal to an…

A: Capacitor C1 will charge the capacitor C2 until voltage across both of them become equa i.e…

Q: 100 Hz ac circuit has a 300 ohm resistor, a 900 milli-henry inductor, and a capacitor all in series.…

A: inductive reactance=2×π×f×L where L is inductor. capacitive reactance=12×π×f×C. Z=R2+(XL-XC)2.

Q: In a 33kV overhead line, there are three units in a string of insulators. If the capacitance between…

Q: A. Now suppose the switches are both changed to position B, such that the capacitors and the…

A: Although Bulb 1 is turned OFF when voltage across 3 micro Farad is equivalent to the source voltage…

Concept explainers

HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.

Question

A capacitor of 1µF is charged to 100 volts and then disconnected from the power supply. A second but
uncharged capacitor of 3µF is then connected across the first capacitor. What is the voltage across the
parallel combination?
O a. 110 volts
O b. 45 volts
O c. 66 volts
O d. 25 volts

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A 15-F AC capacitor is connected in series with a 50 resistor. The capacitor has a voltage rating of 600 WVDC. The capacitor and resistor are connected to a 480-V, 60-Hz circuit. Is the voltage rating of the capacitor sufficient for this connection?
You are working in an industrial plant. You have been instructed to double the capacitance connected to a machine. The markings on the capacitor, however, are not visible. The capacitor is connected to 560 volts and an ammeter indicates a current of 6 amperes flowing to the capacitor. What size capacitor should be connected in parallel with the existing capacitor? What is the minimum AC voltage rating of the new capacitor? What is the minimum DC voltage rating of the new capacitor? What is the minimum KVAR size that can be used in this installation?
A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a current flow of 24 amperes. The circuit current must be reduced to 16 amperes by connecting a second capacitor in series with the first. What is the value of the existing capacitor? What value capacitor should be connected in series with the original capacitor to limit the circuit current to 16 amperes?
An RC series circuit is connected to a 120-V, 60-Hz power source. The resistor is 25 and has a voltage drop of 65 volts. What is the capacitance of the capacitor?
Incandescent lighting of 500 W is connected in parallel with an inductive load. A clamp-on ammeter reveals a total circuit current of 7 A. What is the inductance of the load connected in parallel with the incandescent lights? Assume a voltage of 120 V and a frequency of 60 Hz.
The symbol shown is a a. polarized capacitor. b. normally closed switch. c. normally open held closed switch. d. normally open contact.
You are an electrician working in an industrial plant. You discover that the problem with a certain machine is a defective capacitor. The capacitor is connected to a 240-volt AC circuit. The information on the capacitor reveals that it has a capacitance value of 10 mF and a voltage rating of 240 VAC. The only 10-mF AC capacitor in the storeroom is marked with a voltage rating of 350 WVDC. Can this capacitor be used to replace the defective capacitor? Explain your answer.
Two 10 uF capacitors have been connected in parallel across a 230 V 50 Hz AC supply. The current drawn from the supply will be approximately: Select one: a. 1.44 A b. 0.36 A c. 11.5 A O d. 23.0 A
Show that the voltage division rule for two capacitors in series as in figure 1
r cut 1oum 20gm 1ocm 个 //// wax poper/ A capacitur is mad by sandwiching a sheet of wax psper between two sheebs of aluminum fail, as shoumm What is the figue. capacitance! I the capacitoris aut into twopieces, alme the hme, what oil be the expacitenel of each Diece ? wiggly What lo be the capactnce
A 5-ohm resistor is connected in series with a 25 micro-farad capacitor. A source voltage of 158 volts, 50 Hz supplies the combination. Determine the following: a. Circulating current b. Voltage across the resistor c. Voltage across the capacitor
C) A 25 A electrodynamic ammeter is controlled by a spring having a constant of 5.7295x 10-6 Nm/rad. The full scale deflection is 110°. Determine the inductance of the instrument while measuring a current of 20 A. The mutual inductance at 0° deflection is 4 u H and the change in mutual inductance is linear with the deflection.