The Thevenin equivalent circuit voltage and resistance for the given circuit between terminals a and b respectively

F1 Savita ENG 23-12-24 D9

  1. 49.2 V, 10 Ω
  2. -49.2 V, 15 Ω
  3. -49.2 V, 20 Ω
  4. 49.2 V, 20 Ω

Answer (Detailed Solution Below)

Option 3 : -49.2 V, 20 Ω

Detailed Solution

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F1 Savita ENG 23-12-24 D10
 

Applying KVL in loop 1
24 = 25I1 + 30
\(\begin{aligned} I_{1} & =\frac{24-30}{25}=-\frac{6}{25} \\ V_{\mathrm{th}} & =5\left(I_{1}\right)-48 \\ & =5 \times \frac{-6}{25}-48 \\ & =\frac{-6}{5}-48 \end{aligned}\)F1 Savita ENG 23-12-24 D11
Vth = -49.2 V
Rth = [(10 + 10) || 5] + 16 = 20 Ω
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