Question

Assume that each diode shown in the figure has a forward bias resistance of $50\Omega$ and an infinite reverse bias resistance. The current through the resistance $150\Omega$ is

• A. 0.66 A
• B. 0.05 A
• C. zero
• D. 0.04 A

Answer 1

Answer: (D)

The circuit is

As the lower diode attached to $100\Omega$ resistance is in reversed biased so, it is non-conducting.
Now, the circuit can be redrawn as,

$\therefore$ Current through the circuit, $I=\frac{V}{R}$
$=\frac{10}{250}=0.04A$