In figure given below, assuming the diodes to be ideal:
A
is forward biased and 
is reverse biased and hence current flows from A to B
B
is forward biased and 
is reverse biased and hence no current flows from B to A and vice-versa
C
and 
are both forward biased and hence current flows from A to B
D
and 
are both reverse biased and hence no current flows from A to B and vice-versa
Text Solution
Verified by ExpertsThe correct answer is:
B
In the given circuit 
-side of 
-n junction, 
is connected to lower voltage and n -side of p -n to higher voltage.
Thus 
is reverse biased.
The p -side of 
junction 
is at higher potential and n -side of 
is at lower potential. Therefore 
is forward biased.
Hence, current flows through the junction B to A.
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