Question
Question: In the circuit shown if drift current for the diode is 20 \(\mu A,\) the potential difference a cros...
In the circuit shown if drift current for the diode is 20 μA, the potential difference a cross the diode is

A
2V
B
4.5V
C
4 V
D
2.5V
Answer
4 V
Explanation
Solution
: since the diode is reversed biased, only drift current exists in circuit which is 20μA
Potential drop across 15Ωresistor
}{= 300\mu V = 0.0003V}$$ Potential difference across the diode $$= 4 - 0.0003 = 3.99 = 4V$$