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  4. The circuit shown in following figure contains two diode D1 and D2 each with a forward resistance of 50 ohms and with in finite backward resistance. If the battery voltage is 6 V, the current through the 100 ohm resistance (in amperes) is

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Q. The circuit shown in following figure contains two diode $D_{1}$ and $D_{2}$ each with a forward resistance of $50\, ohms$ and with in finite backward resistance. If the battery voltage is $6\, V$, the current through the $100\, ohm$ resistance (in amperes) isPhysics Question Image

Semiconductor Electronics: Materials Devices and Simple Circuits

Solution:

According to the given polarity, diode $D_{1}$ is forward biased while $D_{2}$ is reverse biased. Hence current will pass through $D_{1}$ only.
So current $i=\frac{6}{(150+50+100)}=0.02\, A$