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AC Circuit RLC

0 votes

asked Dec 7, 2015 in ELECTRICAL ENGINEERING by anonymous

2 Answers

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(a)

Observe the circuit:

The input sine voltage is image.

Compare the function with .

Here image.

Find the total impedance.

image and image are in parallel.

image

image

image

image is in series with image.

image

image

image can be written in polar form as image.

answered Dec 7, 2015 by Lucy Mentor
edited Dec 7, 2015 by Lucy
0 votes

(b)

Step 1:

The input sine voltage is image.

Compare the function with .

in polar form can be written as .

image

image

The sine voltage can be written as image

From (a): Total impedance image.

Find the total current.

image

image

Total current is image

Step 2:

Find the capacitor impedance.

image

image can be written in polar form as image

Find the voltage across the capacitor.

image

image

Voltage across the capacitor is image V.

Solution:

Voltage across the capacitor is image V.

answered Dec 7, 2015 by Lucy Mentor
edited Dec 7, 2015 by Lucy

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