question_answer

Figure shows a circuit contains three identical resistors with resistance\[R=9.0\,\Omega \]each, two identical inductors with inductance L = 2.0 mH each, and an ideal battery with emf \[\varepsilon =18\,V.\] The current 'i' through the battery just after the switch closed is                                                                                                                           

A)  0 ampere                           

B)  2 mA

C)  0.2 A                    

D)   2 A

Correct Answer: D

Solution :

  At t = 0, no current flows through \[{{R}_{1}}\]and\[{{R}_{3}}\] \[i=\frac{\varepsilon }{{{R}_{2}}}\] \[=\frac{18}{9}\] \[=2A\] Note: Not correctly framed but the best option out of given is [d].