devarshi-dt-logo

Question:

In the given circuit, the potential difference between A and B is:

0

10 volt

5 volt

15 volt

Solution:

The diode acts as a 'short' here, since it is in a forward biasing. The equivalent resistance across AB is (10)(10)/(10+10) kΩ = 5 kΩ. Thus the voltage gets divided in the ratio 2:1 across the first resistance and the equivalent resistance across AB. Thus potential difference across AB is (1/3)Vin = 10V.