Question in Electronics

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1. Consider the circuit below:

For the circuit above, determine the following (express all answers in phasor form):

a. XC

Ans a. Xc =

Xc = 63.6619 ∟-90◦ Ω

b. Zeq

Ans b. Zeq = R1||Xc

=62.2752 ∟-78.019◦ Ω

c. IT

Ans c. IT = V/Zeq

=1.926∟78.019◦ A

d. R1

Ans d. R1 = 300 ∟0◦ Ω

e. IC1

Ans e.

Ic1 = V/Xc

= 1.8849 ∟90◦ A

2. Construct the circuit with MultiSIM using a 5% tolerance for the resistor and the capacitor. Adjust the frequency according to the table below and obtain measurements from MultiSIM using AC Analysis and express in polar form.

Circuit

For 100Hz

For 500Hz

For 1000Hz

For 1500 Hz

For 10000 Hz

For 20000Hz

Frequency	IT	IR1	IC1
100 Hz	549.6m∟-136.69◦A	400m∟0◦ A	376.99m ∟90◦ A
500 Hz	1.92693∟-101.98◦A	400m ∟0◦ A	1.8849 ∟90◦ A
1000 Hz	3.79107∟-96.0566◦A	400m∟0◦ A	3.76991 ∟90◦ A
1500 Hz	5.669∟-94.611◦A	400m∟0◦ A	5.65487 ∟90◦ A
10000 Hz	37.7012∟-90.607◦ A	400m∟0◦ A	37.6991∟90◦ A
20000 Hz	75.3982∟-90.3039◦A	400m∟0◦ A	75.39822∟90◦ A

3. Discuss the following:

a. Describe the relationship between the frequency and IT.

Ans a.

AS frequency increase IT increases

b. What effect does frequency have on Zeq?

Ans b.

Zeq decrease with increase in frequency

c. How could the circuit be modified to bring the phase angle closer to 0○?

Ans c. Using Resistor instead of capacitor of same impedance

d. How could the circuit be modified to bring the phase angle closer to -90○?

Ans d.

Using inductor instead of capacitor of same impedance

Include all calculations, screenshots of measurements, the table results of part 3 and the answers to parts 2 and 4 in a word