Three resistors 5$\Omega$, 10 $\Omega$ and 4$\Omega$ are connected as shown in the figure. The equivalent resistance between the points A and D is
Answer & explanation
Correct answer: option 1
Point A and C are at the same potential and Point B and D are at the same potential.
All the three resistors are in parallel.
$ \frac{1}{R} = \frac{1}{5} +\frac{1}{10} + \frac{1}{4} = \frac{11}{20}$
$ R = \frac{20}{11} \Omega$