question_answer

For the given circuit diagram, the equivalent resistance across battery is               

A) 5\[\Omega \]

B)             10\[\Omega \]

C) 20\[\Omega \]                                 

D) 15\[\Omega \]

Correct Answer: D

Solution :

Resistance \[8\Omega \], and \[0.5\Omega \] are in series and Resistance \[7\Omega \],\[1\Omega \] and \[10\Omega \] are also in series. Equivalent resistance across battery is \[{{R}_{eq}}=8.5+2+4.5\] \[=15\Omega \]