Explain the formation of depletion region and barrier potential in PN junction diode.

Draw the circuit diagram of a half-wave rectifier and explain its working.

Explain the construction and working of a full wave rectifier

Write a note on photodiode.

Sketch the static characteristics of a common emitter transistor and bring out the essential features of input and output characteristics.

Describe the function of a transistor as an amplifier with the neat circuit diagram. Sketch the input and output wave forms.

Transistor functions as a switch. Explain.

State Boolean laws. Elucidate how they are used to simplify Boolean expressions with suitable example.

An ideal diode and a 5 Ω resistor are connected in series with a 15 V power supply as shown in figure below. Calculate the current that flows through the diode.

A silicon diode is connected with 1kΩ resistor as shown. Find the value of current flowing through AB is

Find the current through the Zener diode when the load resistance is 2 kΩ. Use diode approximation.

Determine the wavelength of light emitted from LED which is made up of GaAsP semiconductor whose forbidden energy gap is 1.875 eV. Mention the colour of the light emitted (Take h = 6.6 x 10^-34 Js).

In a transistor connected in the common base configuration, \(\alpha\) = 0 95, I_E = 1 mA. Calculate the values of I_C and I_B.

The output characteristics of a transistor connected in common emitter mode is shown in the figure. Determine the value of IC when V_CE = 15 V. Also determine the value of I_C when V_CE is changed to 10 V