Semiconductor Electronics

To get an output of 1 from the circuit shown in figure the input must be :

In an unbiased n-p junction electrons diffuse from n - region to p - region because :

The value of the resistor, $R_S$, needed in the dc voltage regulator circuit shown here, equals :

A 2V battery is connected across AB as shown in the figure. The value of the current supplied by the battery when in one case battery's positive terminal is connected to A and in other case when positive terminal of battery is connected to B will respectively be :

The forward biased diode connection is :

Identify the gate and match A, B, Y in bracket to check.

A Zener diode is connected to a battery and a load as shown below :

The currents I, $I_Z$ and $I_L$ are respectively

For LED's to emit light in visible region of electromagnetic light, it should have energy band gap in the range of :

Given : A and B are input terminals.

Logic 1 = > 5 V

Logic 0 = < 1 V

Which logic gate operation, the following circuit does ?