Question

In the network shown in the figure each of resistance is equal to $2\Omega$. The resistance between A and B is

• A. $1\Omega$
• B. $2\Omega$
• C. $3\Omega$
• D. $4\Omega$

Answer 1

The correct option is B $2\Omega$



Taking the portion COD is figure to outside the triangle (left), the above circuit will be now as resistance of each is $2\Omega$ the circuit will behaves as a balanced wheatstone bridge and no current flows through CD. Hence $R_{AB}=2\Omega$