Question

The ${\alpha }_{dc}$ of a transistor is always

• A. $>1$
• B. $<1$
• C. $=0$
• D. Negative

Answer 1

The correct option is B $<1$

For transistors, current transfer ratio ($\alpha$) is the ratio of collector current ($I_c$) to the emitter current ($I_e$).

Since, $I_c$ is nearly 98% of $I_e$, the ratio becomes less than $1$.