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From the Zener diode circuit shown in fi...

From the Zener diode circuit shown in figure, the current through the Zener diode is

A

34 mA

B

31.5 mA

C

36.5 mA

D

2.5 mA

Text Solution

Verified by Experts

The correct Answer is:
B
Here, `R_L=5xx10^3 Omega , V_i=220 V`,
Zener voltage ,`V_Z=50 V`

Load current, `I_L=V_Z/R_L=50/(20xx10^3)=2.5xx10^(-3) A`
Current through R, `I=(220-50)/(5xx10^3)=34xx10^(-3) A`
Zener current,
`I_Z=I-I_L=34xx10^(-3)-2.5xx10^(-3)`
`=31.5xx10^(-3)A =31.5 mA`
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