In the circuit below(Figure 1), R = 14.0 N and C = 3.00 × 10-6 F. The switch S is closed at t = 0. When the current in the circuit has magnitude 3.00 A, the charge on the capacitor is 40.0 × 10–6 C Part A What is the value of the battery voltage? Express your answer with the appropriate units. HA ? E = Value Units Figure 1 of 1 Submit Request Answer Switch Part B ореn At what time t after the switch is closed is the charge on the capacitor equal to 40.0 × 10-6 C? Express your answer with the appropriate units. HÀ i = 0 q = 0 t = Value Units a R C Submit Request Answer

In the circuit below(Figure 1), R = 14.0 N and C = 3.00 × 10-6 F. The switch S is closed at t = 0. When the current in the circuit has magnitude 3.00 A, the charge on the capacitor is 40.0 × 10–6 C Part A What is the value of the battery voltage? Express your answer with the appropriate units. HA ? E = Value Units Figure 1 of 1 Submit Request Answer Switch Part B ореn At what time t after the switch is closed is the charge on the capacitor equal to 40.0 × 10-6 C? Express your answer with the appropriate units. HÀ i = 0 q = 0 t = Value Units a R C Submit Request Answer

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Direct-current Circuits

Section: Chapter Questions

Problem 25P: In the circuit of Figure P27.25, the switch S has been open for a long time. It is then suddenly...

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In the circuit of Figure P27.25, the switch S has been open for a long time. It is then suddenly closed. Take = 10.0 V, R1 = 50.0 k, R2 = 100 k, and C = 10.0 F. Determine the time constant (a) before the switch is closed and (b) after the switch is closed. (c) Let the switch be closed at t = 0. Determine the current in the switch as a function of time. Figure P27.25 Problems 25 and 26.
The circuit shown in Figure P28.78 is set up in the laboratory to measure an unknown capacitance C in series with a resistance R = 10.0 M powered by a battery whose emf is 6.19 V. The data given in the table are the measured voltages across the capacitor as a function of lime, where t = 0 represents the instant at which the switch is thrown to position b. (a) Construct a graph of In (/v) versus I and perform a linear least-squares fit to the data, (b) From the slope of your graph, obtain a value for the time constant of the circuit and a value for the capacitance. v(V) t(s) In (/v) 6.19 0 5.56 4.87 4.93 11.1 4.34 19.4 3.72 30.8 3.09 46.6 2.47 67.3 1.83 102.2
Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a voltage of 1.00102 MV, and a length of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water?
Consider the circuit shown in Figure P28.21 on page 860. (a) Find the voltage across the 3.00-0 resistor, (b) Find the current in the 3.00-12 resistor.
In the circuit of Figure P27.25, the switch S has been open for a long time. It is then suddenly closed. Determine the time constant (a) before the switch is closed and (b) after the switch is closed. (c) Let the switch be closed at t = 0. Determine the current in the switch as a function of time. Figure P27.25 Problems 25 and 26.
The power dissipated in a resistor is given by P = V2/R, which means power decreases if resistance increases. Yet this power is also given by P = I2R, which means power increases if resistance increases. Explain why there is no contradiction here.
In the circuit shown in figure 1, epsilon is equal to 41.0 V, R1= 4 ohms, R2= 6 ohms, and R3= 3 ohms. (A) what is the potential difference Vab between points a and b when the switch S is open? (B) for the 4 ohm resistor, calculate the current through the resistor with S open. (C) for the 6 ohm resistor, calculate the current through the resistor with S open. (D) for the 3 ohm resistor calculate the current through the resistor with S open. (E) what is the potential difference Vab between points a and b when the switch S is closed? (F) for the 4 ohm resistor calculate the current through the resistor with S closed. (G) for the 6 ohm resistor calculate the current through the resistor with S closed (H) for the 3 ohm resistor calculate the current through the resistor with S closed. (I) for each resistor, does the current increase or decrease when S is closed?
You connect a battery, a resistor, and a capacitor as shown in Figure 4, in that e = 36.0 V, C = 5.0 uF and R = 120 Ohms C. The switch S is closed at t = 0. (a) When the voltage across the capacitor is 8.00 V, what is the magnitude of the current in the circuit? (b) At what time t after the switch is closed the voltage across the capacitor is equal to 8.00 V? (c) When the voltage across the capacitor equals 8.00 V, at what speed is energy being stored in the capacitor? Translation: "Chave aberta" = switch open
Among the four different settings for values of \( R \) and \( C \) in the circuit shown below, which setting would result in the initially charged capacitor discharging more rapidly after the switch is closed?: R = 3 Ω, C = 10 µF R = 5 Ω, C = 3 µF R = 3 Ω, C = 5 µF R = 2 Ω, C = 5 µF
In the circuit below, the capacitor starts out uncharged. The resistance is R = 118 Ω, capacitance is C = 0.0647 F, and the battery emf is 16.7 V. What is the charge (Q) on the capacitor at a time of t = 3.72 seconds after the switch is closed?
The circuit on the right contains three resistors, A, B, and C, which all have equal resistances. The emf is 110V. Which resistor dissipates the most thermal energy after the switch is closed? (Resistor A, B, or C). Why? What other quantity is maximized to tell you that the energy is maximized?
In the circuit shown in figure 1, epsilon is equal to 41.0 V, R1= 4 ohms, R2= 6 ohms, and R3= 3 ohms. (D) for the 3 ohm resistor calculate the current through the resistor with S open. (E) what is the potential difference Vabbetween points a and b when the switch S is closed? (F) for the 4 ohm resistor calculate the current through the resistor with S closed. (G) for the 6 ohm resistor calculate the current through the resistor with S closed (H) for the 3 ohm resistor calculate the current through the resistor with S closed. (I) for each resistor, does the current increase or decrease when S is closed?