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  • In the figure, potential difference between A and B is   <img alt="" src="https://cdn.entrance360.com/media/uploads/2023/08/20/p14.png" style="height:191px; width:375px"

In the figure, potential difference between A and B is  

Option: 1

Zero


Option: 2

5 \mathrm{~V}


Option: 3

10 \mathrm{~V}


Option: 4

15 \mathrm{~V}


Answers (1)

best_answer

Here p-n junction is forward biased. If p-n junction ideal, its resistance is zero. The effective resistance across A and B
=\frac{10 \times 10}{10+10}=5 \mathrm{k} \Omega \text {. }
Current in the circuit \mathrm{I=\frac{V}{R}=\frac{30}{15 \times 10^3}=\frac{2}{10^3} \mathrm{~A}}
Current in arm \mathrm{A B=I=\frac{2}{10^3}}
Potential difference across A and B \mathrm{=\frac{2}{10^3} \times 5 \times 10^3=10 \mathrm{~V}.}

Posted by

Kuldeep Maurya

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