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  4. In the circuit, if the forward voltage drop for the diode is 0.5 V, the current will be

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Q. In the circuit, if the forward voltage drop for the diode is $0.5\, V$, the current will bePhysics Question Image

Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

The voltage drop across resistance $=8-0.5=7.5\, V$
$\therefore $ Current $i=\frac{7.5}{2.2 \times 10^{3}}=3.4\, mA$