1. Will the bulb light for the whole time that the capacitor discharges? Explain. 2. Say why this method (of measuring the size of an obstacle) isn’t useful.
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1. Will the bulb light for the whole time that the capacitor discharges? Explain.
2. Say why this method (of measuring the size of an obstacle) isn’t useful.
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- 1.Based on the mathematical equation for the potential difference across a charging capacitoras a function of time, how long does it take a capacitor to become fully charged? Why?2. From a practical point of view, how many time constants are required for a capacitor tobecome fully discharged (i.e. more than 99% of the charge lost)? Why?K, and a generator of voltage V. Mark as true or false the following statements concerning the stor phase of V, V, V, Vc and VR- 1. V, and VR are in phase. 2. Vị leads Ve by 90°. 3. V is at angle o relative to VR- 4. VL-Vc is in phase with V,. 5. Vc lags VR by 90°. 5 give V. = 10.76 V. V.=5.68 V.Would the first Capacitor be twice the voltage as the second in this case, Choice answer d? Then three times as much in the second case? Just wanted to make sense of this. Two capacitors have equal capacitance. If capacitor one is holding twice the amount of charge as the second capacitors, how do the capacitors voltage compare? a. The first capacitor has four times the voltage as the second b. The first capacitor has the equal amount of voltage as the second c. The first capacitor has half the voltage as capacitor two d. The first capacitor has twice the voltage as the second How about given that capacitor one is three times the charge as capacitor two?
- A series combination of a 45,000 Ohm resistor and an unknown capacitor is connected to a 15 V battery. Once second after the circuit is completed, the voltage across the capacitor is 8 V. a. Determine the capacitance of the capacitor. b. What is the voltage across the capacitor 2 seconds after the circuit is completed?d. Would adding a stronger dielectric to the capacitor in a charging RC circuit increase, decrease, or not change its time constant?Consider the circuit below. We have C1 = 10. pF, C2 = 20. pF, C3 = 30. pF, and V = 6.0 V. Answer the questions to follow regarding this circuit. i. What is the charge on C3? ii. What is the potential across C1? iii. What is the charge on C2? iv. What is the total energy stored in this system of capacitors?
- For all of the following, we're considering parallel plate capacitors. Select all the true statements. If none of them are true, select "None of the above." A. Capacitance is the property of a device that enables it to store current.B. Charge is stored in the dielectric medium between the plates of a capacitor.C. The capacitance of a parallel plate capacitor depends on the charge stored on the plates.D. The charges on the two plates of a capacitor are equal in magnitude and sign.E. Adding a dielectric between the plates of an isolated air-filled charged capacitor reduces the charge stored on the device.F. None of the above.Question A3 A large capacitor of 3000 µF is charged by a constant current. After 1 minute it reaches a voltage of 100 V. At that voltage, the charging circuit is disconnected. a) Calculate the charging current. b) A second identical capacitor is connected across the capacitor, using wires with 1 kN re- sistance. Sketch a graph of the voltages on the two capacitors as a function of time, with appropriate numbers and units marked on the axes.1. You have five 10.0 F capacitors. Show all the possible connections for the five capacitors to produce a total capacitance of 50.0 F. 2. Suppose the space between the plates of the capacitor in Sample Problem 2.6 item number 2 is filled with equal thicknesses of the same dielectrics but arranged as shown. What is its capacitance? 3. The capacitors in Sample Problem 2.6 item number 3 are connected in parallel instead of being in series. The combination is connected to a 100 V line. Find the (a) total capacitance, (b) charge stored in each capacitor, and (c) potential difference across each capacitor.