The capacitors shown in the figure has capacitances as c, = 2 pF and cz = 4 uF. The capacitor c, is charged to V = 30V and cz capacitor is uncharged in the beginning. Find the new potential difference between the tips of the capacitors after the switches are closed and the system is balanced C2 A. 10 V B. B V O C. 12 V O D. 20 V Seçimi Sifırla
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- Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?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.For the circuit shown in the figure, in which the capacitor is initially fully discharged. If the source voltage V is 17 Volts, the capacitance of capacitor C is 24 mF; and the values of the resistors in Ω are: R1 = 2250 , R2 = 1071 , R3 = 2455 , R4 = 1199 and R5 = 1043 Determine the voltage across the capacitor in Volts after 15 minutes have elapsed since the circuit is energized. ..
- A. Find the equivalent capacitance of the combination shown in the figure. (C2 = 2µF, C3 = 3µF) B. Determine the charge on each capacitor, if there is a potential difference of 900V C. Determine the voltages across each capacitorPicture shown three capacitors with capacitances C1=6.00μF,C2=3.00μF,C3=5.00μF . The capacitor network is connected to an applied potential Vab. After the charges on the capacitors have reached their final values, the charge Q2 on the second capacitor is 40.0 μC. Part A What is the charge Q1 on capacitor C1? Part B What is the charge on capacitor C3? Express your answer in microcoulombs to three significant figures. Part C What is the applied voltage, Vab? Express your answer in volts to three significant figures.Electrical Engineering --question 1-- Calculate the theoretical voltages across the resistor and inductor for 10 kHz and 60 kHz using the 680Ω theoretical resistance, 3.3 mH inductance, and 5-V source. Demonstrate the step-by-step process. Answer must be in Polar form. --question 2-- Calculate the theoretical voltages across the resistor and capacitor for 500 Hz and 1750 Hz using the 680Ω theoretical resistance, the observed capacitance, and the 5V source. Demonstrate the step-by-step process. Answer must be in Polar form.
- Method of mesh currents in the given circuit using the voltage vc (t) above the capacitor find ?Consider an LRC series circuit with a resistance of 2.5 ohms, capacitance of 0.1 farad, aninductance of 0.1 henry and electromotive force, volts. Given thatAssume there is no initial charge and no initial current on thecapacitor.a) Find the equation of the charge q(t), on the capacitor at any time t.(Do not solve the coefficients).b) Name two methods that can be used to find the particular solution qp(t).c) Write your assumption to solve for the particular solution based on each methodanswered in (b).d) State the equation of the current, i(t).e) State the transient and the steady-state current.For the circuit shown in figure below, find the equivalent capacitance (Ceq) of the combination.
- 11. Consider a network shown in the figure consisting of a resistance, a capacitor, an inductor and three alternating voltage sources 1, 2 and 3. Terminal voltages of the sources 1, 2 and 3 are v₁ = Vo sin(t), V₂ = Vo sin(cot +120°) and v3 = Vo sin(ot+240°) respectively and moduli of the reactance of the capacitor and the inductor are equal to the resistance. Then 10 3 P (A) Peak value of voltage at point P is vo (√3+1) (B) Peak value of voltage at point P is vo (√3-1) (C) Vp = Vo (√3+ 1) sin(oot +90) (D) vp = Vo (√3-1) sin(oot + 180)V(t) = V0e^-t/rc where V(t) is the voltage across the capacitor after it's been discharging for an amount of time t, V0 is the voltage it started at, C is the capacitance of the capacitor, and R is the resistance of the resistor it's discharging through. One thing we can take away from this is that, after it's been discharging for an amount of time t = RC, the voltage across the capacitor will be V0e^−1, which is about 37% of the voltage it started at. In other words, RC, the resistance times the capacitance, is the amount of time it takes the capacitor to discharge from 100% voltage to 37% voltage. (The units check out, by the way: 1Ω⋅1F=1sec) If you have an RC circuit with a 10 mF capacitor and a 2 kΩ resistor, about how long will it take the capacitor to discharge to 37% of its original voltage? Group of answer choices 100 s 5 s 12 s 20 sAn emf source with E=100 V, a resistor with R=80 ohms, and a capacitance with C=4 uF are in series.connected. While the current is 0.9A during the loading of the capacitor, the load on the plates of the capacitor ishow big is it (in uC)?