Two identical P-N junctions are connected in series in three different ways as shown below to a battery. The potential drop across the P-N junctions are equal in
Show Hint
When identical P-N junctions are connected in series, the voltage drop across them can be equal depending on the configuration.
Step 1: Analyzing the circuits.
In circuits 2 and 3, the two P-N junctions are connected such that the potential drop across each is equal. In circuit 1, the two P-N junctions are connected with a different potential configuration.
Step 2: Conclusion.
Therefore, the correct answer is option (A).
Final Answer:
\[
\boxed{\text{(A) circuits 2 and 3}}
\]
