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Question

In the given circuit, the potential difference between A and B is:
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A
0
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B
5 volt
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C
10 volt
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D
15 volt
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Solution

The correct option is D 10 volt
The diode acts as a 'short' here, since it is in a forward biasing.
The equivalent resistance across AB is (10)(10)10+10kΩ=5kΩ
Thus the voltage gets divided in the ratio 2:1 across the first resistane and the equivalent resistance across AB.
Thus potential difference across AB is 13Vin=10V.

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