Q. The circuit shown in the figure contains two diodes each with a forward resistance of $50\ \Omega$ and with infinite backward resistance. If the battery is 6 V, the current through the $100\ \Omega$ resistance (in ampere) is
A) Zero
B) 0.02
C) 0.03
D) 0.036
Explanation
(b) In circuit the upper diode junction is forward biased and the lower diode junction is reverse biased. Thus there will be no conduction across lower diode junction. Now the total resistance of circuit$= 100 + 150 + 50 = 300\Omega$
Current in $100\Omega = \frac{6}{300} = 0.02\ A.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.