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Reverse Bias

VA and VB d...

Question

$V_{A}$ and $V_{B}$ denote potentials of A and B, then the equivalent resistance between A and B in the adjoining circuit is

15 Ω

, if

V_{A} > V_{B}

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30 Ω

, if

V_{A} < V_{B}

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both A and B

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neither A nor B

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Solution

The correct option is C both A and B
If $V_{A} > V_{B}$ diode will be forward bias, therefore resistors will be in series.
If $V_{A} < V_{B}$ diode will be reverse bias therefore resistor with diode will be removed.

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VA and VB denote potentials of A and B, then the equivalent resistance between A and B in the adjoining circuit is

The correct option is C both A and BIf VA>VB diode will be forward bias, therefore resistors will be in series.If VA<VB diode will be reverse bias therefore resistor with diode will be removed.

$V_{A}$ and $V_{B}$ denote potentials of A and B, then the equivalent resistance between A and B in the adjoining circuit is

The correct option is C both A and B
If $V_{A} > V_{B}$ diode will be forward bias, therefore resistors will be in series.
If $V_{A} < V_{B}$ diode will be reverse bias therefore resistor with diode will be removed.