In the circuit shown, both capacitors are initially charged to Vo. а. How long after closing the switch S will the potential across each capacitor be reduced to b. What will be the current at that time? R2 C1 C2 R1 WW
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- The circuit diagram shows three resistors connected to a battery. The resistances are R1 = 1.0 k2, R2 = 2.0 kN, and R3 = 3.0 k2. Which of the statements below best describes the situation? R, R2 R3 ) The potential difference across R2 is smaller than that across R3 ) The current through R2 is greater than that through R3 All three resistors carry the same current. O All three resistors have the same potential difference. Rq carries the smallest current. The current through R3 is greater than that through R11. a) Find the magnitude of the current through the 20.0 Q resistor. b) Find the direction of the current through the 15.0 2 resistor. Circle one. Explain your answer below. The current goes toward the lower right of the circuit OR toward the upper left of the circuit. c) Find the voltage drop across the 10.0 2 resistor. 20.0 2 12.0 V 15.0 2 5.00 2 7.00 V 3.00 V 10.0 2A parallel plate capacitor of capacitance C has charge +Q on one plate and -Q on the other. It is discharged through resistance R. The maximum value of the current flowing through the resistor is given by a. Q/C b. Q/RC C. QR/C d. Q?/c e. C/R
- What is the charge Q on the capacitor immediately after the switch is changed? What is the current I through the resistor immediately after the switch is changed?Four identical capacitors are connected with a resistor in two different ways. When they are connected as in part a of the drawing, the time constant to charge up this circuit is 0.72 s. What is the time constant when they are connected with the same resistor as in part b? R C с Number i R www C + (b) UnitsC2 C1 XS R 5. From the figure above, a pair of charged capacitors are given C1 and C2 = 2 µF which are charged with a battery of 12 V. Determine then, how much charge between both capacitors is left after the switch has closed for over 1ms? How much is left for the capacitors C1 and C2? Lastly, determine the . 1 μF current of the circuit after this time.
- An uncharged capacitor and a resistor are connected in series to a battery. If & = 9.00 V, C = 20 μF, and R = 2 Mº. a. Find the time constant of the circuit. b. Find the voltage across the resistor at the moment the switch is closed. c. The maximum charge on the capacitor. d. The voltage across the resistor 20 seconds after the switch is closed. e. The time it takes the capacitor to be 50% charged.This problem involves analyzing an RC circuit. See the circuit diagram below. Switch closes at t = 0 s. А. When the switch closes at t = 0, the capacitor will begin to charge. What is AVc a very long time after the switch has closed? After a very long time, what is the maximum charge on the capacitor, Qmax in terms of a combination of problem variables Ɛ, C or R? %3D Apply Kirchhoff's loop law starting clockwise from the lower left corner. Write down the loop equation for this circuit. How is the current through the resistor related to the instantaneous capacitor charge? Is I = + dQ/dt or I = – dQ/dt? Explain. | В. The Kirchhoff loop equation from part (A) should be a differential equation in terms of dQ/dt. Using the differential equation technique “separation of variables" show that charge as a function of time is given by Q(t) = Qmax(1 – e-t/t). С. Using the result of part (B) determine and expression for the current as a function of time 1(t). Sketch Q (t) and I(t) from t = 0 to t…K05
- For the circuit given. What is the charge stored on C3, in mC? The voltage source in the circuit has a potential different of 6 V. C1 = 2.42 mF C2= 4.33 mF C3= 6.96 mFIn the diagram shown, assume the battery voltage is 10.0 V. All resistors are equal. a. Find the voltage across the 2 parallel resistors at the top. b. Find the voltage across the middle resistor. c. Find the voltage drop across the bottom pair of parallel resistors.Physics sample problems about vectors. Thought I knew how to do them but keep getting wrong answers.