A 609 uF capacitor has an initial voltage, v(0) = 1 V. If the current flowing through the capacitor is i(t) = 19 mA, what is the voltage v(t) across the capacitor, at time t= 67ms? Enter your answer to 3 significant figures. i(t) C + v(t) -
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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?Inductive Circuits Fill in all the missing values. Refer to the following formulas: XL=2fLL=XL2ff=XL2L Inductance (H) Frequency (Hz) Inductive Reactance ( ) 1.2 60 0.085 213.628 1000 4712.389 0.65 600 3.6 678.584 25 411.459 0.5 60 0.85 6408.849 20 201.062 0.45 400 4.8 2412.743 1000 40.841A 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?
- Capacitive Circuits Fill in all the missing values. Refer to the formulas that follow. XC=12fCC=12fXCf=12CXc Capacitance XC Frequency 38 F 60 Hz 78.8 400 Hz 250 pF 4.5 k 234 F 10 kHZ 240 50 Hz 10 F 36.8 560 nF 2 MHz 15 k 60 Hz 75 nF 560 470 pF 200 kHz 6.8 k 400 Hz 34 F 450A postage stamp capacitor has the following color marks starting at the upper-left dot: black, orange, orange, black, silver, and white. What are the capacitance value and tolerance of this capacitor?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?
- 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.The circuit is connected to a 60-Hz line. The apparent power in the circuit is 29.985 VA, and the power factor is 62.5%. The resistor has a voltage drop of 14.993 V, the inductor has an inductive reactance of 60 , and the capacitor has a capacitive reactance of 45 . ETITZVA29.985PF62.5%ER14.993VIRRPELILXL60VARsLLECICXC45VARsCCThree capacitors having values of 2.2 F, 280 F, and 470 pF are connected in parallel. What is the total capacitance?
- What is a true statement about the capacitors connected in series illustrated below? с 30 HH AV O The energy stored in the capacitor of capacitance 3C is nine times larger than the energy stored in the capacitor of capacitance C O The energy stored in each capacitor is the same. O The energy stored in the capacitor of capacitance 3C is three times larger than the energy stored in the capacitor of capacitance C. O The energy stored in the capacitor of capacitance 3C is three times smaller than the energy stored in the capacitor of capacitance C. O The energy stored in the capacitor of capacitance 3C is nine times smaller than the energy stored in the capacitor of capacitance C. 4A capacitor circuit carrying 12 mA is placed across a 9 V sine wave ac source. A resistor carrying 20 mA is connected in parallel with the capacitor. The total circuit magnitude of current is esc 233 mA 32 mA O 12 MA ! 1 20 mA Q A N ← 2 W S #3 C E D X C $ 4 R F G Search or type URL % 5 V T G ^ 6 MacBook Pro B Y H & 7 N U ☆ J * 00 8 M + - ( 9 K < O < ) O L ➡ P V : ; { [ + + 11 = ? 11 F } 1 delete returnCalculate the Voltage across the capacitor at time constant 3+ for the following RC Circuit. Assume switch is closed and capacitor is in a charge state. LE t=0 10 V Vc(t) = Vo(1-e-t/t) oto R1 1kQ C1 1uF