Question

In the given circuits (a), (b) and (c), the potential drop across the two p-n junctions are equal in : (7) Both circuits (a) and (c) (2) Circuit (a) only (3) Circuit(b) only (4) Circuit (c) only

Answer 1

In circuit a&c, both the diode are in forward bias, hence both will have same potential drop across them (symmetry)

However, in circuit b, one diode is forward bais and other is reverse, hence they both wont have same p.d. across them.