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Question: Answered & Verified by Expert
A 2 V battery is connected across AB as shown in the figure. The value of the current supplied by the battery when in first case battery's positive terminal is connected to A and in second case when positive terminal of battery is connected to B will respectively be:
PhysicsSemiconductorsJEE MainJEE Main 2015 (11 Apr Online)
Options:
  • A 0.2 A and 0.1 A
  • B 0.1 A and 0.2 A
  • C 0.2 A and 0.4 A
  • D 0.4 A and 0.2 A
Solution:
1010 Upvotes Verified Answer
The correct answer is: 0.4 A and 0.2 A
When +ve polarity is connected to A

Then D1 is forward biased and D2 is reversed biased i.e.



∴ I1 current through D1=25=0.4 A

When +ve polarity is connected to B then D2 is forward biased and D1 is reversed biased then



⇒I2=210=0.2  A

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