In the circuit shown below, if the source voltage Vs =100

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In the circuit shown below, if the source voltage V_s =100 ∠ 53.13° V then the Thevenin’s equivalent voltage in Volts as seen by the load resistance R_L is

1. 100 ∠90°
2. 800 ∠0°
3. 800 ∠90°
4. 100 ∠60°

Correct Option: C

Given : V_s = 100 ∠53.13° V

To find : Thevenin’s voltage across Load resistonce
Solution
* For V'_th open it.

* Opening, then I₂ = 0
* When I₂ = 0, then j40I₂ = 0 {voltage source will short circuit)
∴ Circuit became

* V_TH = 10V_L1 because no-current flowing through circuit.

V_TH =	10 × j4 × V_s	=	40 j V_s
	3 + 4j		3 + 4j

From rectangular domain to polar domain.