In Fig. 30-65, R = 15 Ω, L = 5.0 H, the ideal battery has E = 10 V, and the fuse in the upper branch is an ideal 3.0 A fuse. It has zero resistance as long as the current through it remains less than 3.0 A. If the current reaches 3.0 A, the fuse “blows” and thereafter has infinite resistance. Switch S is closed at time t = 0. (a) When does the fuse blow? (Hint: Equation 30-41 does not apply. Rethink Eq. 30-39.) (b) Sketch a graph of the current i through the inductor as a function of time. Mark the time at which the fuse blows.
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- (A) The switch S, is closed for a long time in the circuit shown. Then, S, is opened and Sz is closed simultaneously. What is the maximum charge that can be stored in E the capacitor? E = 30 V, L = 4 mH, R = 5 Q, C = 6 µF L R 0.93 mc 0.65 C 0.65 mc 0.93 C 0.35 C 0.35 mc O None of themarrow_forwardThe switch in the given figure has been in position A for a long time. Assume the switch moves instantaneously from A to B at t= 0. Find v for t> 0. Assume R = 4 kN. 5 kΩ Α B 10 μF 40 V R The voltage v(t) v(0) e-1/ , where v(0) V and T= S.arrow_forwardWhen the switch S is toggled to the left, the capacitor C charges through the resistor R. When the switch is toggled to the right, the capacitor discharges current through the patient's torso, modeled as the resistor Rtorso, allowing the heart's normal rhythm to be reestablished. (a) If the capacitor is initially uncharged with C = 7.00 µF and = 1270 V, find the value of R (in ohms) required to charge the capacitor to a voltage of 795 V in 1.70 s. Ω (b) If the capacitor is then discharged across the patient's torso with Rtorso = 1270 Ω, calculate the voltage (in V) across the capacitor after 4.50 ms.arrow_forward
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- In the shown circuit, the capacitor is initially uncharged. The switch S is closed at time t=0. Find the current in the circuit (in µA) when the charge on the capacitor is 7.5 µC. 10 V 2.0uF 0 05 MO «k Question 2 of 12arrow_forwardIn Fig, suppose that E = 60.0 V, R = 240 Ω, and L = 0.160 H. With switch S2 open, switch S1 is left closed until a constant current is established. Then S2 is closed and S1 opened, taking the battery out of the circuit. (a) What is the initial current in the resistor, just after S2 is closed and S1 is opened? (b) What is the current in the resistor at t = 4.00 x 10-4 s? (c) What is the potential difference between points b and c at t = 4.00 x 10-4 s? Which point is at a higher potential? (d) How long does it take the current to decrease to half its initial value?arrow_forwardFor a long period of time the switch S in position "b". At t = 0 s, the switch Si moved from position "b" to position "a". 1 ΜΩ www 3 ΜΩ www 11 V 4 μF Sb Find the voltage across the 1 MN center-left resistor at time t₁ = 3 s. Answer in units of V. Much later, at some time to = 0s, the switch is moved from position "a" to position "b". Find the voltage across the 1 MS center-left resistor at time t' = 1.3 s. Answer in units of V.arrow_forward
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