VITEEE 2014 Paper

As diode 1 is forward biased, thus current will flow through it whereas diode 2 is reverse biased, so no current flows through it. Equivalent circuit is also shown above. Total resistance of equivalent circuit Req=20+30
We get Req=50Ω
Thus current flowing through the circuit I=‌

V

Req

∴V=‌

5

50

A