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Question
Beyond the threshold voltage, resistance offered by the diode is:
Beyond the threshold voltage, resistance offered by the diode is:
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Solution
The correct option is B Very low
The minimum forward bias voltage required for a diode to conduct is called threshold voltage. Threshold voltage is the voltage above which current increases very rapidly with applied voltage. Beyond threshold voltage, the resistance offered by the potential barrier is overcome by forward bias voltage, therefore, it is easy for charge carriers to cross the barrier. Hence, the resistance offered by diode is very low.
The minimum forward bias voltage required for a diode to conduct is called threshold voltage. Threshold voltage is the voltage above which current increases very rapidly with applied voltage. Beyond threshold voltage, the resistance offered by the potential barrier is overcome by forward bias voltage, therefore, it is easy for charge carriers to cross the barrier.
Hence, the resistance offered by diode is very low.
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