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  4. The circuit contains two diodes each with a forward resistance of 50 Ω and with infinite reverse resistance. If the battery voltage is 6 V, the current through the 120 Ω resistance is mA. <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-r1xpwe8ge2fszxd2.jpg />

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Q. The circuit contains two diodes each with a forward resistance of $50\,\Omega$ and with infinite reverse resistance. If the battery voltage is $6\,V,$ the current through the $120\,\Omega$ resistance is $mA.$
Question

NTA AbhyasNTA Abhyas 2022

Solution:

$D_{2}$ is reverse bias so current does not flow through $D_{2}.$
$D_{1}$ is forward bias.
Solution
$I=\frac{6}{300}\Rightarrow 0.02\,A$
$=20\,mA$