Consider the circuit, the current through the Zener diode is

20 m A

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10 m A

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15 m A

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40 m A

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Solution

The correct option is B $10 m A$
Voltage across Zener diode is constant
$i_{R_{2}} = \frac{20}{2000} = 0.01 A$
$i_{R_{1}} = \frac{(40 - 20)}{2000} = 0.01 A$

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A zener diode, having breakdown voltage equal to $15 V$ , is used in a voltage regulator circuit shown in figure.

The current through the diode is

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