The rms current in a copy machine is 7.61 A, and the resistance of the machine is 18.1Ω. What are (a) the average power and (b) the peak power delivered to the machine?
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The rms current in a copy machine is 7.61 A, and the resistance of the machine is 18.1Ω. What are (a) the average power and (b) the peak power delivered to the machine?
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- The values of the components in a simple series RC circuit containing a switch (Fig. P21.53) are C = 1.00 F, R = 2.00 106 , and = 10.0 V. At the instant 10.0 s after the switch is closed, calculate (a) the charge on the capacitor, (b) the current in the resistor, (c) the rate at which energy is being stored in the capacitor, and (d) the rate at which energy is being delivered by the battery.A TV works properly under the voltage of ΔV = 180 V with power P = 1740 W. (a) Express the current I through the power P and the voltage ΔV. (b) Calculate the working current of the TV in A. (c) Express the resistance R through the voltage ΔV and the current I. (d) Calculate the numerical value of R in Ω.In the circuit diagram R1 = 5R and R2 = 15R, where R = 14 Ω. The power dissipated in resistor 2 is P = 1.6 W. Part (a) What is the voltage across the battery in volts? Part (b) How much power, Ps, is the source supplying, in watts?
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- A capacitor that is initially uncharged is connected in series with a resistor and a 300.0 V emf source with negligible internal resistance. Just after the circuit is completed, the current through the resistor is 0.950 mA and the time constant for the circuit is 6.00 s. (A) What is the resistance of the resistor? Express your answer with the appropriate units. (B) What is the capacitance of the capacitor? Express your answer with the appropriate units.A capacitor that is initially uncharged is connected in series with a resistor and a 700.0 V emf source with negligible internal resistance. Just after the circuit is completed, the current through the resistor is 0.900 mA and the time constant for the circuit is 10.00 s. What are (a) the resistance of the resistor and (b) the capacitance of the capacitor?A resistor with resistance R is connected to a battery that has emf 12.0 V and internal resistance r = 0.40 Ω. For what two values of R will the power dissipated in the resistor be 80.0 W?
- Consider a series RC circuit as in the figure below for which R = 9.00 MN, C = 7.00 µF, and E = 28.0 V. R (a) Find the time constant of the circuit. (b) What is the maximum charge on the capacitor after the switch is thrown closed? (c) Find the current in the resistor 10.0 s after the switch is closed. HAConsider a series RC circuit as in the figure below for which R = + E (a) Find the time constant of the circuit. S 9.00 MQ, C = 4.00 μF, and ε = 31.0 V. (b) What is the maximum charge on the capacitor after the switch is thrown closed? μC (c) Find the current in the resistor 10.0 s after the switch is closed. HAAt time t = 0, an RC circuit consists of a 17.0-V emf device, a 54.0-Q resistor, and a 152.0-μF capacitor that is fully charged. The switch is thrown so that the capacitor begins to discharge. (a) What is the time constant τ of this circuit? 0.008208 S (b) How much charge is stored by the capacitor at t = 0.5T, 2T, and 4t? 9051 × Your response differs from the correct answer by more than 100%. μc q(t = 0.5T) 0 q(t = 2T) q(t = 4T) x The correct answer is not zero. μc 0 The correct answer is not zero. μC