EXAMPLE 11. Find the equivalent capacitance
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Q: Obtain the equivalent capacitance of the circuit below. Ans. 50 microfarad 40 F
A: The solution can be achieved as follows.
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Q: determine the equivalent inductance of this circuit below
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Q: Find the closest standard value inductance that has the reactance of 2ohm at frequency of 14.47kHz
A: The inductive reactance of the coil is:
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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?(VD₂ = Determine the voltage across each capacitor in the circuit figure below. 0.68 V, VD₂ 0.56 V) = 240 V rms 50 Hz 1:1 ooooo elele C₁ H 1μF D₁ HE D₂ .C₂ 1 μF
- 1. Calculate the equivalent capacitance between A and B a) C/2 b) C d) 3C/2 e) 6C 2. Calculate the equivalent resistance between Aand a) C/2 b) C 4C/3 ) 30/2 3 Oloulate the equivaleot capacitance between A and B b) C 0 ac/2Solve the following values in figure 1.0. Total Capacitance, Ct. Total Charge, Qt. Individual Charge of C1 Individual Charge of C2 Individual Charge of C3The network Nc shown below in Figure 1.99(a) contains a combination of scaled capaci- tors in series and parallel connections. Using the vahues as shown, you are asked to do the following. (a) Calculate the value of the terminal capacitance Cab at terminals a-b. (b) To obtain an equivalent capacitance Ceq of 1.5F, Nc is to be placed either in series with a capacitance Cz as shown in Figure 1.99(b) or in parallel with Cx as shown in Figure 1.99(c). Determine which connection is correct and calculate the value of C; that will produce the value of 1.5F for Ceg- 4F 2F 3F 1F C OF (a) N. N. 2. (b) (c) Figure 1.99 (a) Capacitor combo Nc (b) Nc in series with C, (c) Ne in parallel with C,
- Qno.3 If the equivalent capacitance between a and b is 10„F for the combination of capacitors shown in Figure 2. Calculate the value of capacitance "x" All capaci- tances shown in figure are in pico farads. 4.0 10.0 X 2.0 Figure 2(iii). Determine the net capacitance C of the capacitor network shown in figure. Assume C-3 pF, C2 5 pF, C 6 pF and C 9 pl. Determine the charge on each capacitor, assun there is a potential difference of 15 V across cach network. C2 C, C3A 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
- 17 A Capacitor 10 stores 0124 Cat volts. Its Capacitance is ? AAn air filled parallel-plate capacitor is connected to a 12 Volts battery, the battery is disconnected when it is fully charged to 7.3 nC. The separation distance between the plates is d1= 8 cm. Now, If the plates are moved to a new distance d233 cm. the new energy stored in the capacitor is O a. 13.14 nJ O b. 8.21 nJ O c. 1.64 nJ O d. 10.96 nJ O e. 5.47 nJ O f. 16.42 nJDraw block diagrams for each of the following elements, first voltage as input and current as output, and then vice versa: a. resistance, b. capacitance, c. inductance.