List of top Physics Questions on PN Junction Diode

In a full wave rectifier circuit operating with \(50\,\text{Hz}\) mains frequency, the fundamental frequency in the ripple at the output would be

When a forward bias is applied to a p-n junction diode, then (A) majority carrier current becomes zero. (B) potential barrier is raised. (C) width of the depletion layer reduces. (D) junction resistance increases. Choose the correct answer from the options given below:

The circuit has two oppositely connected ideal diodes in parallel. The current flowing in the circuit will be

A p-n junction diode \((D)\) shown in the figure below can act as a rectifier. An alternating current source \((V)\) is connected in the circuit. The current \((I)\) in the resistor \((R)\) can be shown by which graph?

When an external operating bias voltage is applied to a standard P-N junction semiconductor diode under a forward bias configuration, how do the width of the internal depletion region and the height of the contact barrier potential change?

On connecting a device X in a series circuit with a battery and a resistor, a current passes through the circuit. On reversing the polarity of the battery, the current in the circuit drops to almost zero. The device X may be a