If a common emitter circuit is used as an amplifier, its current gain is \(50.\) If input resistance is \(1\) kΩ and input voltage is \(5\) V, then output current will be:
1. \(250\) mA
2. \(30\) mA
3. \(50\) mA
4. \(100\) mA

Of the diodes shown in the following diagrams, which one of the diodes is reverse biased?
 

1.		2.
3.		4.

The truth table for the following network is:

In semiconductors at room temperature:

In a p–n junction photocell, the value of the photo electromotive force produced by monochromatic light is proportional to:

For the given circuit of the \(\mathrm{p\text-n}\) junction diode, which of the following statements is correct?

Reverse bias applied to a junction diode:

The barrier potential of a \(\mathrm{p\text-n}\) junction diode does not depend on:

Following diagram performs the logic function of:
    
1. AND gate
2. NAND gate
3. OR gate
4. XOR gate