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Question: In a <em>p–n junction</em> diode: <table> <tbody> <tr> <td>1.The depletion capacitance increases with increase in the reverse-bias</td> </tr> <tr> <td>2.The depletion capacitance decreases with increase in the reverse-bias</td> </tr> <tr> <td>3.The diffusion capacitance increases with increase in the forward-bias</td> </tr> <tr> <td>4.The diffusion capacitance is much higher than the depletion capacitance when it is forward-biased</td> </tr> </tbody> </table>

Answer:

The depletion capacitance decreases with increase in the reverse-bias

The diffusion capacitance increases with increase in the forward-bias

The diffusion capacitance is much higher than the depletion capacitance when it is forward-biased

MCQ: In a <em>p–n junction</em> diode: <table> <tbody> <tr> <td>1.The depletion capacitance increases with increase in the reverse-bias</td> </tr> <tr> <td>2.The depletion capacitance decreases with increase in the reverse-bias</td> </tr> <tr> <td>3.The diffusion capacitance increases with increase in the forward-bias</td> </tr> <tr> <td>4.The diffusion capacitance is much higher than the depletion capacitance when it is forward-biased</td> </tr> </tbody> </table>

Correct Answer: A. 1 and 3

Explanation:

The depletion capacitance decreases with increase in the reverse-bias

The diffusion capacitance increases with increase in the forward-bias

The diffusion capacitance is much higher than the depletion capacitance when it is forward-biased

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