The ratio of amplitude of V2/V1 for circuit shown below is :

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NIELIT Scientific Assistant ECE 5 Dec 2021 Official Paper
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  1. 10 
  2. 1.6
  3. 2.6
  4. 1.25

Answer (Detailed Solution Below)

Option 3 : 2.6
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Concept:

To find the ratio of amplitudes in an AC circuit, use voltage division in the phasor domain considering the impedance of elements.

Given the source: , the angular frequency is .

Given:

Resistors: 4Ω and 5Ω, Inductor: 1H, Capacitor:

Calculation:

Impedance of inductor:

Impedance of capacitor:

The impedance of the right branch (Zright):

Magnitude of Zright:

The impedance of the left branch (Zleft):

Total impedance:

Using voltage divider rule:

Correct Answer: 3) 2.6

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