Question

In the circuit given below, the voltage across AB is _______________

(a) 250 V

(b) 150 V

(c) 325 V

(d) 100 V

The question was asked in quiz.

My doubt stems from Advanced Problems Involving Complex Circuit Diagram in division Network Theory and Complex Circuit Diagram of Network Theory

Answer 1

Right answer is (c) 325 V

The best I can explain: Loop current I1 = \(\frac{50}{20}\) = 2.5 A

I2 = \(\frac{100}{20}\) = 5 A

VAB = (50) (2.5) + 100 + (5) (20)

 = 125 + 100 + 100

 = 325 V.