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+1 vote
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in Physics by (91.3k points)
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The equivalent resistance of the circuit shown in figure between the points A and B if `V_A lt V_B` is
image
A. `10 Omega`
B. `20 Omega`
C. `5 Omega`
D. `40 Omega`

1 Answer

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by (91.0k points)
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Best answer
Correct Answer - B
When `V_A lt V_B`, the diode is reverse biased and offers infinite resistance. No current flows through the upper branch
`therefore R=20 Omega`

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