Electric Circuits, Fall 2017 HW8 Solution

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1.[8%] Find the Thevenin equivalent to the left of the load Z in the circuit below.

Solution:

Electric Circuits, Fall 2017 HW8 Solution

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Electric Circuits, Fall 2017 HW8 Solution

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2.[8%] Find current I𝒐 in the circuit below.

Solution:

Electric Circuits, Fall 2017 HW8 Solution

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Electric Circuits, Fall 2017 HW8 Solution

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3.[8%] For the circuit below, find I𝟏, I𝟐 and V𝒐.

Solution:

Electric Circuits, Fall 2017 HW8 Solution

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4.[10%] Calculate the average power dissipated by the 20Ω resistor in the circuit below.

Solution:

Electric Circuits, Fall 2017 HW8 Solution

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Electric Circuits, Fall 2017 HW8 Solution

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5.[8%] In the ideal transformer cirtuit shown below, determine the average power

delivered to the load.

Solution:

I2=0.21 + j0.40 A

V2=19.96 - j0.40 V

Pcomplex=V2I2* = 4.03 − j8.068 VA

𝑃𝑎𝑣𝑔 = 𝑅𝑒𝑃𝑐𝑜𝑚𝑝𝑙𝑒𝑥 = 4.03 𝑊 (≈ 4𝑊)

6. [4%]

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7.[6%]

8.[8%]

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9.[10%]

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10.[8%]

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11.[10%]

12.[12%]

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