Question

in a transistor circuit the collector current is 50 mA and the base current is 1 mA the current gain a is
51/50
49/50
50/51
49/51​

Answer 1

Answer:50/51

Explanation:a=iC/iE

iC=50mA

iB=1mA

iE=(50+1)mA=51mA

Substituting the values, we get

a=50/51

Hope this helps

Answer 2

Given:

The collector current, I$_{C}$ = 50 mA

The base current, I$_{B}$ = 1 mA

To Find:

The current gain (α) of the transistor.

Calculation:

- The emitter current is given by the formula:

I$_{E}$  = I$_{C}$ + I$_{B}$

⇒  I$_{E}$ = 50 + 1

⇒ I$_{E}$ = 51 mA

- The current gain of the transistor is given by the formula:

α = I$_{C}$ / I$_{E}$

⇒ α = 50/51

- So, the current gain (α) of the transistor = 50/51

- Hence, the correct answer is option (c).