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  4. In the circuit shown assume the diode to be ideal. When Vi increases from 2 V to 6 V, the change in the current is (in mA)

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Q. In the circuit shown assume the diode to be ideal. When $V_i$ increases from $2 \,V$ to $6\, V$, the change in the current is (in $mA$)Physics Question Image

WBJEEWBJEE 2014Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

$I_{\text {initlal }}=0$
image
$I_{\text {final }}=\frac{3}{150}=0.02\, A$
So, change in $I=0.02 \,A =20\, mA$