question_answer

In the given figure, potential difference between A and B is [RPMT 2000]

A)         0

B)         5 volt

C)         10 volt

D)         15 volt

Correct Answer: C

Solution :

                                         Equivalent resistance \[R=10+\frac{10}{2}=15\,k\Omega \] Current i = \[\frac{30}{15}=2\times {{10}^{-3}}A\] Hence, potential difference between A and B                                                    \[V=\left( \frac{2\times {{10}^{-3}}}{2} \right)\times 10\times {{10}^{3}}=10\,Volt\text{.}\]