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1. Study the sample problem sheet for problem 3-1. Use the circuit of Figure P3- 1 with el(t) 5u(t)-5u(t-2) and e2(t) 8tu(t) and solve for the two currents il(t) and i2(t) 40 ena) e과。 くー410) (-2の Figure P3-1 2. Use the circuit of Figure P3-1 with el(t)- 4sin wt and e2(t) 5cos ut the two currents i1(t) and i2(t). Express each current as a single sinusoid. and solve for 3. Determine the Thevenin equivalent for Figure P3-8 with i(t) 4u(t 2) and e(t) 5cos ut 20 e佝 i(t) 100 60 4. During an interval of 30 ms, the average current in a 5 μF capacitor is 10 mA. Determine the change in voltage across the capacitor. 5. The current in an initially uncharged 2 μF capacitor appears like Figure P3.23 with different microamp numbers: Find the voltage across the cap, at t : 0 VcE : at t 2 Vc
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