A 5 V battery is connected across the points X and Y. Assume D1 and D2 to be normal silicon diodes. Find the current supplied by the battery if the +ve terminal of the battery is connected to point X.
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a
~0.43 A
b
~0.5 A
c
~1.5 A
d
~0.86A
answer is A.
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Detailed Solution
Diode D2 is in reverse bias. So , current will only flow through D1 diode.As the diode is normal , its potential barrier +0.7V is taken into account. i=V−V2R=5−0.710=0.43A