When the switch is in position A, the capacitor C, is fully charged while the capacitors C2 and C3 are fully empty. When the switch is moved to position B, the total energy (in J) stored by the three capacitors becomes: Switch B C;÷40 µF 100 V C=20 uF C,+40 µF
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- 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 LFor the circuit shown, calculate 1. the initial energy stored in the capacitors; 2. the final energy stored in the capacitors; 3. the total energy delivered to the black box; 4. the percentage of the initial energy stored that is delivered to the black box; and 5. the time, in milliseconds, it takes to deliver 7.5 mJ to the black box.A 20μF capacitor is subjected to a voltage pulse having a duration of 1 s. The pulse is described by the following equations: vc(t)={30t2 V,0≤t≤0.5 s;30(t−1)2 V,0.5 s≤t≤1 s;0elsewhere. Sketch the current pulse that exists in the capacitor during the 1 s interval.
- Calculate the equivalent capacitance in the circuit. Enter your answer in µF rounded to 2 decimal places. All capacitors were initially discharged. at t = 0, S1 is placed at position 1 and S2 is closed. At t = 15 ms, S1 is placed at position 2 and S2 is kept closed. At t = 25 ms, S1 is kept at position 2 and S2 is opened. Data: V1 = 19 V; R1 = 7.5 kΩ, R2 = 5 kΩ, R3 = 2.0 kΩ, R4 = 2 kΩ, R5 = 20 kΩ, R6 = 9.0 kΩ; C1 = 4.5 µF, C2 = 6.0 µF, C3 = 13 µFE = 245 V | R1 = 74 kΩ | R2 = 15 kΩ | R3 = 47 kΩ The capacitor in this circuit initially has no charge. It has a capacitance of 1 μF. The switch is closed at t = 0. Give the values of the time constant τ (tau) and Vf (the value across the capacitor after the switch has been closed for a long period of time). τ = Vf =1. Calculate the capacitance between two parallel plates, each of which is 100 sq. Inches and 2 mm apart in air. 2. A capacitor is charged with 0.23 J of energy at a voltage of 48V. What is its capacitance? 3. A 50-uF capacitor is initially charged. Determine the initial charge of the 50-uF capacitor if the charge transferred to a 100-uF capacitor, when connected in parallel, is 200-uC.
- (a) If the capacitor is initially uncharged with C = 8.50 µF and = 1230 V, find the value of R (in ohms) required to charge the capacitor to a voltage of 785 V in 1.40 s. (b) If the capacitor is then discharged across the patient's torso with Rtorso = 1240 Ω, calculate the voltage (in V) across the capacitor after 4.50 ms.All capacitors were initially discharged. at t = 0, S1 is placed at position 1 and S2 is closed. During this phase, it has been determined that Eth and Rth seen by the equivalent capacitor are, respectively, 16 V and 11.0 kΩ. The equivalent capacitor is 1.50 µF. Calculate the time constant for this phase. Enter your answer in ms rounded to 2 decimal places. At t = 15 ms, S1 is placed at position 2 and S2 is kept closed. At t = 25 ms, S1 is kept at position 2 and S2 is opened. Data: R1 = 5 kΩ, R2 = 4 kΩ, R4 = 3 kΩ, R5 = 18 kΩ, R6 = 12.5 kΩ;The current at the terminals of the two capacitors shown is 240e −10tμA for t≥0. The initial values of v1 and v2 are −10 V and −5 V, respectively. Calculate the total energy trapped in the capacitors as t→∞. (Hint: Don’t combine the capacitors in series—find the energy trapped in each, and then add.)
- All capacitors were initially discharged. at t = 0, S1 is placed at position 1 and S2 is closed. At t = 15 ms, S1 is placed at position 2 and S2 is kept closed. During this phase, it has been determined that the total resistance seen by the equivalent capacitor is 28 kΩ; and that vT = 10 V at t = 15 ms. Calculate the value of the current iT immediately after the switching occurred. Enter your answer in mA rounded to 2 decimal places. At t = 25 ms, S1 is kept at position 2 and S2 is opened. Data: R1 = 6.5 kΩ, R2 = 10 kΩ, R3 = 1.0 kΩ, R4 = 4 kΩ, R5 = 20 kΩ, R6 = 11.5 kΩ; C1 = 4.5 µF, C2 = 4.0 µF, C3 = 12 µF6 A capacitor is constructed with parallel metal plates, If the plate separation is 2 mm and the capacitance is given to 1 nano Farads, determine the area of the parallel plates of the device. Select one: a. 0.12 square meters b. 0.23 square meters c. 0.27 square meters d. 0.20 square metersA 100-pF capacitor is constructed of parallel plates of metal, each having a width W anda length L. The plates are separated by air with a distance d. Assume that L and W are bothmuch larger than d. What is the new capacitance ifa. both L and W are doubled and the other parameters are unchanged?b. the separation d is doubled and the other parameters are unchanged from their initialvalues? c. the air dielectric is replaced with oil having a relative dielectric constant of 25 and theother parameters are unchanged from their initial values ?