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  4. For the given circuit, the power across zener diode is ldots ldots ldots ldots mW

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Q. For the given circuit, the power across zener diode is $\ldots \ldots \ldots \ldots mW$Physics Question Image

JEE MainJEE Main 2021Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

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$i =\frac{10 V }{5 k \Omega}=2\, mA$
$I =\frac{14 V }{1 k \Omega}=14 \,mA$
$\therefore I _{z}=12 \,mA$
$\therefore P = I _{z} \,V _{z}$
$=120 \,mW$