The circuit in Fig. P6.8 is driven by an EMF V = V o sin( t) a) At time t 1 , th

ID: 2019090 • Letter: T

Question

The circuit in Fig. P6.8 is driven by an EMF V = Vosin(t)

a) At time t1, the switch is closed on A.

- Calculate the impedance of the circuit?

- What is the frequency o that maximizes the average power dissipated in the resistor R?

- For = o, what is the average power dissipated in the resistor R?

between i and V ? Is i leading or lagging V?

- How does the amplitude Io of the current i depend on the frequency ? Draw a graph of Io vs.

b) At time t2, the switch is closed on B.

- Calculate the impedance of the circuit.

- How does the amplitude Io of the current i depend on the frequency ? Draw a graph of Io vs.

Already

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