question_answer

Two diodes \[{{D}_{1}}\,\,and\,\,{{D}_{2}}\] are connected as shown in figure, then the current in resistance R is

A)  zero                             

B)  0.5 A

C)  1 A                             

D)  2 A

Correct Answer: B

Solution :

Here both diodes \[{{\operatorname{D}}_{1}}\,\,and\,\,{{D}_{2}}\] are forward biased, so they offer no resistance \[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\,I=\frac{5\,\,V}{10\,\Omega }=0.5\,A\]