question_answer

The current \[{{n}_{2}}=3\xrightarrow{{}}{{n}_{1}}=2\] drawn from the \[4p\] source will be

A) 0.67 A                   

B) 0.5A

C) 0.17 A                   

D) 0.33 A

Correct Answer: B

Solution :

The equivalent circuit is shown in the figure \[\frac{5}{10}=\frac{10}{20}\] The Wheatstone bridge is balanced. The \[\therefore \] resistance in arm BC is ineffective. Resistance along \[MO=(KK)\sigma 2{{s}^{2}},\sigma 2{{s}^{2}},\sigma 2p_{z}^{2},\pi 2p_{x}^{2}\approx \pi 2p_{y}^{2},\] Resistance along \[\overset{*}{\mathop{\pi }}\,2p_{x}^{1}\approx \overset{*}{\mathop{\pi }}\,2p_{y}^{0}\] Effective resistance \[\because \] Current \[=\frac{1}{2}[{{n}_{b}}-{{n}_{a}}]\]