Question 113 of 380

The equivalent resistance between $A$ and $B$ as shown in figure is:

A$10k\Omega$B$5k\Omega$C$20k\Omega$D$30k\Omega$

Show answer and solution▾

Answer: (B) $5k\Omega$

The equivalent circuit of the given configuration can be drawn as follows:

With reference to the above diagram, the equivalent resistance of the given configuration can be calculated as follows:
$\begin{matrix}\dfrac{1}{R} & = & \dfrac{1}{20\Omega }+\dfrac{1}{20\Omega }+\dfrac{1}{10\Omega } \\ & = & \dfrac{1}{5\Omega } \\ & \Rightarrow & R=5\Omega \end{matrix}$

JEE Main Physics practice question on Current Electricity (Combination of Resistances), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.