Question

In the given circuit, the current through zener diode is :

• A. $5.5 \,mA$
• B. $6.7 \,mA$
• C. $2.5 \,mA$
• D. $3.3\, mA$

Answer 1

Answer: (D)

$3.3\, mA$

Answer 2

Voltage across $R_{1}$ is given by
$V_{R_{1}}=V-V_{ z }=15-10=5 V$. Resistance $R_{1}=500\, \Omega$