The equivalent resistance between points A and B shown in the figure below:

Correct option is A

(a) The equivalent resistance between points A and B is 2 Ω.

To calculate the equivalent resistance between points A and B:

1. The resistors form a combination of parallel and series connections.
2. The 3 Ω and 3 Ω resistors at the top are in series Rseries=3+3=6Ω
3. This combined resistance of $6\Omega$ is in parallel with the other $3\Omega$ resistor.

R_Total= (1/6)+(1/3)

                    R_Total = 2Ω 

1. Series Combination: Total resistance increases (Rtotal=R1+R2R_{\text{total}} = R_1 + R_2Rtotal​=R1​+R2​).
2. Parallel Combination: Total resistance decreases (R_total = 1/R₁+1/R₂)
3. Solving step-by-step is crucial for mixed combinations of resistors.
4. Equivalent resistance reduces when combining in parallel.
5. Simplify series and parallel resistances sequentially.