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Charge-Storage Device
A capacitor is a two-terminal device that can store electric charge. In a linear capacitor, the amount of charge stored is proportional to the voltage across the device. For a particular device the proportionality is
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Chapter 1 Solutions
ANALYSIS+DESIGN OF LINEAR CIRCUITS(LL)
- Assume that the current flow through the resistor, IR, is 15 A; the current flow through the inductor, IL is 36 A; and the circuit has an apparent power of 10,803 VA. The frequency of the AC voltage is 60 Hz. ET ER EL IT IR15A IL36A Z R XL VA10,803 P VARSL PF Larrow_forwardAn AC circuit contains a 24 resistor, a 15.9-mH inductor, and a 13.3F capacitor connected in parallel. The circuit is connected to a 240-V, 400-Hz power supply. Find the following values. XL=XC=IR=AIL=AIC=AP=WVARsL=VARsC=IT=AVA=PF=%=arrow_forwardAn initially charged capacitor has an initial voltage of Vo=53 Vand a capacitance ofC=175μFand it is connected to a resistor of resistance R=4.85kΩas shown in the figure below. The switch is closed at t=0. Determine the current running in the circuit one time constant after the switch is closed. Express your answer in units of mA using one decimal place.arrow_forward
- The time constant for the circuit is 1.20 s. What is the time t in which the charge on the capacitor reaches 65.0% of its initial charge after the switch is closed.? C -Q FQ S Rarrow_forwardCapacitors are fundamental electrical components that store energy in the form of an electric field. They consist of two conductors separated by an insulator, known as a dielectric. When a voltage is applied to the capacitor terminals, it accumulates opposite charges on the conductors, creating an electric field between them. What is the total capacitance (C) in farads (F) between terminals A and B in the capacitor arrangement present in the circuit below?arrow_forwardTRUE or FALSE a. A discontinuous change in the voltage requires an infinite current thus a capacitor resists an abrupt change in the voltage across it. b. The inductor takes power from the circuit when storing energy and delivers power to the circuit when returning previously stored energy.arrow_forward
- Given the electrical system below, find the function of the voltage signal over the capacitorin time, and calculate its value for a time t=1 s.arrow_forwardA capacitor has a capacitance of 0.1 μF with air as the dielectric. If the dielectric material is changed from air to a ceramic material with a dielectric constant of 600, what is the new capacitance? (Note: Neither air nor Ceramic capacitors this large are available.)arrow_forwardPart C The L = 100 mH inductor in the following figure has an initial current of Io = 10 mA. If the voltage is, v(t) = le 10t+2e 5 V, what is the current, i(t), through the inductor? Express your answer as a function of time with units of mA.arrow_forward
- An (open) electric circuit consists of an inductor, a resistor, and a capacitor. There is an initial charge of 2 coulombs on the capacitor. At the instant the circuit is closed, a current of 3 amperes is present and a voltage of E(t) = 20 cos t is applied. In this circuit the voltage drop across the resistor is 4 times the instantaneous change in the charge, the voltage drop across the capacitor is 10 times the charge, and the voltage drop across the inductor is 2 times the instantaneous change in the current. Write an initial value problem to model the circuit.arrow_forwardA 790 uF capacitor has an initial voltage, v(0) = 2 V. If the current flowing through the capacitor is i(t) = 12 mA, what is the voltage v(t) across the capacitor, at time t= 51ms? Enter your answer to 3 significant figures. i(t) C + t v(t)arrow_forwardThe initial capacitor voltage is 4 V. Switch S1 is closed at t = 0. The charge (in micro C) lost by the capacitor form t = 25 microS to t = 100 microS is:1) 6.992) 8.713) 5.554) 10Please show detailed steps and workarrow_forward
- Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
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