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Two PN-junction can be connected in seri...

Two `PN`-junction can be connected in series by three different methods as shown in the figure. If the potential difference in the junction is the same, then the correct connection will be

A

In the circuit (1) and (2)

B

In the circuit (2) and (3)

C

In the circuit (1) and (3)

D

Only in the circuit (1)

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