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ECT 125 WEEK 1 HOMEWORK ASSIGNMENTS

Chapter 10

2) Calculate the value of vL developed across a 4.7 H coil when the instantaneous rate of change in component current equals 1.5 A/s.

4) Calculate the value of vL developed across a 470 µH coil when the instantaneous rate of change in component current equals 2 mA/µs.

6) Calculate the value of the air-core inductor

8) Calculate the value of the iron-core inductor

10) The coils shown in Figure 10.43b have a value of k = 0. Calculate the total inductance in the circuit.

Chapter 12

2) A capacitor is storing 100 μC of charge when the difference of potential across its plates is 40 V. Calculate the value of the component.

4) Determine the charge that a 100 pF capacitor stores when the difference of potential across its plates is 25 V.

6) Calculate the total capacitance in the series circuit shown

8) Calculate the total capacitance in the series circuit shown

10) Calculate the total capacitance in the parallel circuit shown

Chapter 16

2) Determine the time constant for the circuit shown

4) Determine the time required for the current to reach its peak value

6) An RL switching circuit has values of R= 33 Ω, L= 100 μH, and Ipk= 75 mA. Determine the value of the circuit current (It) at the following times:

8) Determine the time required for VR to reach 18 V on the rise curve.

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