You connect a battery, resistor, and capacitor as in Fig. 26.20a, where R = 12.0 Ω and C= 5.00 × 10−6F. 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 × 10−6C. (a) What is the emf of the battery? (b) At what time t after the switch is closed is the charge on the capacitor equal to 40.0 × 10−6C? (c) When the current has magnitude 3.00 A. at what rate is energy being (i) stored in the capacitor, (ii) supplied by the battery?
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- You connect a battery, resistor, and capacitor as in the figure, where R = 16.0 Ω and C = 8.00 ×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. (a) What is the emf of the battery? (b) At what time t after the switch is closed is the charge on the capacitor equal to 40.0×10−6 C? (c) When the current has magnitude 3.00 A, at what rate is energy being stored in the capacitor? (d) When the current has magnitude 3.00 A, at what rate is energy being supplied by the battery?arrow_forwardWhen switch S in Fig. E25.33 is open, the voltmeter V of the battery reads 3.08 V. When the switch is closed, the voltmeter reading drops to 2.97 V, and the ammeter A reads 1.65 A. Find the emf, the internal resistance of the battery, and the circuit resistance R. Assume that the two meters are ideal, so they don’t affect the circuit.arrow_forwardYou connect a battery, resistor, and capacitor as in (Figure 1), where R = 14.0 Ω 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. At what time t after the switch is closed is the charge on the capacitor equal to 40.0 x 10^-6 C? When the current has magnitude 3.00 A, at what rate is energy being stored in the capacitor?arrow_forward
- 26.11: In the figure, R1=3.00 W, R2=6.00 W, and R3=5.00 W. The battery has no internal resistance. The current I2 through R2=4.00 A. What is/are (a) the currents I1 and I3 and (b) the emf of the battery?arrow_forwardIn the figure R1 = R2 = 10.22 0, and the ideal battery has emf g = 12.08 V. (a) What value of R3 maximizes the rate at which the battery supplies energy and (b) what is that maximum rate? R1 R (a) Number Units Units (b) Numberarrow_forward25.54. In the circuit shown in Fig. P25.54, R is a variable resistor whose value ranges from 0 to co, and a and b are the terminals of a battery that has an emf E = 15.0V and an internal resistance of 4.00 2. The ammeter and voltmeter are idealized meters. As R varies over its full range of values, what will be the largest and smallest readings of (a) the voltmeter and (b) the ammeter? (c) Sketch qualita- tive graphs of the readings of both meters as functions of R. Figure P25.54 Rarrow_forward
- A battery of a computer has an emf of 12 Volts. The computer uses l=360mA while running. If the computer runs out of battery in t=7.3 hours, what is the energy stored in the battery?(answer will be answered in units of Wh....note: in order to transform Joule into Wh, which means Watt hours, just divide the number obtained in Joule by 3600-s)arrow_forwardA series circuit is comprised of a 200VDC battery, a switch, a 1 kΩ resistor and a 10000 µF capacitor. Iniatially the switch is open and the capacitor is uncharged. What is the circuit current 32 seconds after the switch is closed? Your answer should be in mA.arrow_forwardYou connect a battery, resistor, and capacitor as in Fig. 26.20a, where E = 36.0 V, C = 5.00 mF, and R = 120 Ω. 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 is the voltage acrossthe capacitor 8.00 V? (c) When the voltage across the capacitor is 8.00 V, at what rate is energy being stored in the capacitor?arrow_forward
- A 10 MΩ resistor is connected in series with a 1.0 μF capacitor and a battery with emf 12.0 V. Before the switch is closed at time t=0,the capacitor is uncharged. What fraction of the final charge Qf is on the capacitor at t=10s?arrow_forwardProblem #2: Maxwell's Equations. Consider the RC circuit shown. It consists of: an ideal 18 V battery, E a 30 resistor, and a 15 mF capacitor. R The capacitor consists of two circular plates separated by a small distance. Each plate has radius R € 0.46 m. The capacitor is initially uncharged. GH = At time t = 0, the switch is closed. с 3. How fast is the electric flux between the capacitor plates changing at the instant the switch is closed? S 4. When the current through the resistor is 0.40 A, what is the magnetic field at point H, a distance of 0.35 m from the center of the capacitor?arrow_forwardFor the circuit shown in Fig. Q1(c), the capacitor is initially charged to 2.5 V with the polarity shown. Calculate the voltage vc (t) when the switch (S) is closed. + 7.5 V R, Σ 3.3 ΚΩ R₂ 9.5 ΚΩ S 42 uF - 15 V Fig. Q1(c)arrow_forward
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