Large capacitors can hold a potentially dangerous charge long after a circuit has been turned off, so it is important to make sure they are discharged before you touch them. Suppose a 120 μF capacitor from a camera flash unit retains a voltage of 200 V when an unwary student removes it from the camera Part A If the student accidentally touches the two terminals with his hands, and if the resistance of his body between his hands is 1.8 kf2, for how long will the current across his chest exceed the danger level of 50 mA? Express your answer with the appropriate units. HÅ ?

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?

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Capacitor Circuit 9 V.A If C1 = 32 µF, what is the value of C2? Enter the numerical value in units of uF. C1 C23 Ceq Type your answer... Capacitors C1 and C2 are combined into an equivalent capacitor that has a 10 capacitance of Ceg = 60 µF. %3D Assuming the equivalent capacitor is a parallel plate capacitor with no dielectric, what size plates are required to generate the given capacitance if the separation distance between the plates is 0.90 mm? Enter the numerical value of the area in SI units. Type your answer...

Problem 5: In the circuit below AVbat. C1 = 15 µF, C2 = 20 µF, C3 = 30 µF are initially uncharged. (a) What is Q1,a, Q2,a, Q3,a? The charges on the capacitors when S is closed at position a. Answers: Q1.a The switch is then put in position b. What is Q1,b, Q2,b, Q3,6? The charges on the capacitors when S is put in position b. Answers: Q1,b = 833.3 µC, Q2,6 = 666.7 µC, Q3,6 = 666.7 µC. 100 V, the switch S is initially open, and the capacitors = 1500 µC, Q2,a = 0 µC, Q3,a = 0 µC. (b) b а C2 AVpat C1 C3