For the RC circuit below, draw 2 graphs: one of the voltage across the capacitor as a function of time (graph between 0 ≤ t ≤ 4ms) and one of the current through the resistor as a function of time (also graph between 0 ≤ t ≤ 4ms ). There is initially no charge on the capacitor and the switch is closed at time t = 10V 500ΚΩ 8μF
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- 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.Two capacitors having values of 80 F and 60 F are connected in series. What is the total capacitance?You find that a 25-F capacitor connected to 480 VAC is defective. The storeroom has no capacitors with a 480-VAC rating. However, you find two capacitors rated at 50 F and 370 VAC. Can these two capacitors be connected in such a manner that they can replace the defective capacitor? If yes, explain how they are connected and why the capacitors will not be damaged by the lower voltage rating. If no, explain why they cannot be used without damaging the capacitor.
- A postage stamp mica capacitor has the following color marks starting at the upper left dot: yellow, violet, brown, green, no color, and blue. What are the capacitance value, tolerance, and voltage rating 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?7. The resistor in an R-L series circuit has a voltage drop of 53 V, and the inductor has a voltage drop of 28 V. What is the applied voltage of the circuit?
- R = 91 ohm L = 93 H C = 3 mF Can you please find the equation for the voltage across the capacitor This is the complete question if anything is missing than comment that what is missing..The two parallel plate capacitors (C1 and C2) are initially charged by an external power source and the power source is disconnected later, leaving the two capacitors charged as seen in the figure. The capacitor C1 has dielectric material between its parallel plates. The length of the two parallel plate capacitors are the same. The distance between the parallel plates of the capacitors are also the same. However the width of C1 is 2a whereas the width of C2 is a. The amount of charge stored in C1 is Q1 = 10q. It is also observed that the amount of charge stored in C2 becomes Q2 = 4q if the dielectric material in C1 is removed (and replaced by air). What is the dielectric constant of the dielectric material that is used in C1?A certain capacitor is in series with a 500 resistor as it is being discharged. At the end of 10 ms its charge is 1/e(=1/2.71= 0.368) of its final value. The capacitance is approximately:
- A 5.0-µF capacitor and a 7.0-µF capacitor are connected in series across an 8.0-V potential source. What is the potential difference across the 5.0-µF capacitor? OV O 8V O 4.7 V O 2.7 VIn the circuit shown in the following figure(Figure 1) the capacitor has capacitance 19μF and is initially uncharged. The resistor Ro has resistance 11 2. An emf of 84.0 V is added in series with the capacitor and the resistor. The emf is placed between the capacitor and the switch, with the positive terminal of the emf adjacent to the capacitor. The small circuit is not connected in any way to the large one. The wire of the small circuit has a resistance of 1.1 /m and contains 25 loops. The large circuit is a rectangle 2.0 m by 4.0 m, while the small one has dimensions a = 13.0 cm and b = 18.0 cm. The distance c is 5.0 cm. (The figure is not drawn to scale.) Both circuits are held stationary. Assume that only the wire nearest the small circuit produces an appreciable magnetic field through it. Part A The switch is closed at t = 0. When the current in the large circuit is 4.70 A, what is the magnitude of the induced current in the small circuit? Express your answer with the appropriate…The capacitance of a certain variable capacitor may be varied between limits of 1 × 10-20 F and 5×10-10 F by turning a knob attached to the movable plates. The capacitor is set to 5 × 10-10 F, and is charged by connecting it to a battery of EMF 200 V. What is the charge on the plates? The battery is then disconnected and the capacitance changed to 1 × 10-10 F. Assuming that no charge is lost from the plates, what is now the potential difference between them? How much mechanical work is done against electrical forces in changing the capacitance?