Question

If the input and output resistances in a common-base amplifier circuit are  respectively, what is the voltage amplification when the emitter current is 2 mA and current gain ?

Solution

Correct option is

980

Emitter current is 2 mA; input resistance is , output resistance is , input voltage is  and collector current 

Output or collector voltage is  

          

Voltage amplification is 

          .

SIMILAR QUESTIONS

Q1

The transfer ratio  of a transistor is 50. The input resistance of the when used in the common emitter configuration is . The peak value of the collector ac current for an ac input voltage for 0.01 V peak is

Q2

In a common base transistor circuit, the current gain is 0.98. On changing in the emitter current by 5.00 mA, the change in the collector current is

Q3

On increasing the reverse bias to a large value in a pn junction diode, the current  

Q4

When arsenic is added as an impurity to silicon, the resulting material is

Q5

What is the voltage gain in a common emitter amplifier, where the input resistance is  and load resistance ? Given .

Q6

In a pn junction dipole at a high value of reverse bias, the current rises sharply. The value of reverse bias is known as

Q7

The total current in the block is 

Q8

In a pnp transistor, the p-type crystal acts as

Q9

The current gain in a common emitter transistor is

Q10

When npn transistor is used as an amplifier