Question

Two $PN$ junctions can be connected in series by three different methods as shown in the figure. If the potential difference in the junctions is the same, then the correct connections will be

• A. in circuits (1) and (2)
• B. in circuits (2) and (3)
• C. in circuits (1) and (3)
• D. only in circuit (1)

Answer 1

Answer: (B)

Because in case (1), $N$ is connected with $N$. This is not a series combination of transistor.