English: So, that is 1.5 + 2.5 = 4 Ω; that means, this R_(Thevenin) = 4 Ω .
Telugu: అంటే 1.5 + 2.5 = 4 Ω; అంటే, ఈ R_ (థెవెనిన్) = 4 Ω .