Problem 2. Calculate the capacitor voltage, v, for t> 0 for the given circuit, assume and initial capacitor voltage of 7 volts. 6 A 1 6Ω ww X. t = 0 MM 4Ω 2 mF
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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?A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?Assume that the voltage drop across the resistor, ER, is 78 V, that the voltage drop across the inductor, EL, is 104 V, and the circuit has a total impedance, Z, of 20 . The frequency of the AC voltage is 60 Hz. ETITZ20VAPFER78VIRRPEL104VILXLVARsLL
- Calculate capacitance Cand voltage U over resistance. What is the peak value of resistance's voltage? Voltage source e(t) = ésin(wt + 45°). Resistance R-50, circuit's total reactance X-50, inductance L =50mH, ê -40V and frequency f =50Hz. R L Give the answers to one decimal place. Do not write numbers in the complex number form! Absolute value of voltage source (RMS value): V Total impedance of circuit (absolute value): Capacitance: μF Absolute value of current (RMS value) supplied by voltage source: Phase angle of current: degrees Peak value of resistances voltage: 22 A1. What impedance vector 0 – j22 represents:A. A pure resistance.B. A pure inductance.C. A pure capacitance.D. An inductance combined with a resistance.A 20-ohm resistor and a capacitor are connected in series with a battery of 60 volts. At t = 0, there is no charge on the capacitor. Find the capacitance if the current at t = 5 seconds is 3/e^s amperes. Ans. 0.05 Farads
- Required information Problem 06.037 - DEPENDENT MULTI-PART PROBLEM - ASSIGN ALL PARTS The current through a 17-mH inductor is 4 sin 100t A. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Problem 06.037.a - Voltage across an inductor Find the voltage vt). The voltage is cos 100t V.A paralel-plate capacitor is constructed using a dielectric material whose dielectric constant is 2.40 and whose dielectric strength is 3.00 x 10" wm. The desired capacitance is 0.100 g, and the capacitor must withstand a maximum potential difference of 4.00 kv. Find the minimum area of the capacitor plates. Jm²6) When the frequency of an a.c. circuit containing resistance and capacitance is decreased, the current (a) decreases (b) increases (c) stays the same 7) In a series a.c. circuit the voltage across a pure inductance is 12 V and the voltage across a pure resistance is 5 V. The supply voltage is (a) 13 V (b) 17 V (c) 7 V (d) 2.4 V 8) The impedance of a coil, which has a resistance of X ohms and an inductance of Y henrys, connected across a supply of frequency K Hz, is (a) 2π Κ Υ (b) X + Y (c) √x² + y² (d) √X² + (2nKY)² 9) When a capacitor is connected to an a.c. supply the current (a) leads the voltage by 180° (c) leads the voltage by 1/2 rad (b) is in phase with the voltage (d) lags the voltage by 90° 10) In an R-L-C series a.c. circuit a current of 5 A flows when the supply voltage is 100 V. The phase angle between current and voltage is 60° lagging. Which of the following statements is false? (a) The circuit is effectively inductive (c) The equivalent circuit reactance is 25 2 (b)…
- 6) When the frequency of an a.c. circuit containing resistance and capacitance is decreased, the current (a) decreases (b) increases (c) stays the same 7) In a series a.c. circuit the voltage across a pure inductance is 12 V and the voltage across a pure resistance is 5 V. The supply voltage is (a) 13 V (b) 17 V (c) 7 V (d) 2.4 V 8) The impedance of a coil, which has a resistance of X ohms and an inductance of Y henrys, connected across a supply of frequency K Hz, is (a) 2π Κ Υ (b) X + Y (c) √x² + y² (d) X² + (2nKY)²5. Find the capacitor voltage in the network shown in figure. If the switch closes at t-0. Assume zero initial conditions. Also find the time constant, rise time, and settling time for the capacitor voltage 1=0 ww 1.802 0.79 FDetermine the current through the 260mH inductor in the circuit shown in the figure and choose the solution from the options given. 0.7, ángulo de -2.9° 0.9, ángulo de -19.8° .52, ángulo de -23.1° 0.338, ángulo de 303⁰ 65 Ω 85mH 150 sin(2π 100t) mn 200 Ω 260mH 28 75 카 120 Ω 50uF