PYQ Vault
EbooksTutor

Converting between alpha and beta, or collector current from emitter current

This type of question, asked 5 times: 19 Apr 2025 S1, 23 Apr 2025 S1, 11 Apr 2026 S2, 13 Apr 2026 S1, 14 May 2026 S1. All 5 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    19 Apr 2025 S1

    26
    For a common emitter transistor, if ICIE=0.95\frac{I_{C}}{I_{E}}= 0.95, then the current gain is

    Tap an option to check your answer.

  2. Question 2

    23 Apr 2025 S1

    25
    In the case of common emitter transistor amplifier, the ratio of collector current to emitter current is 0.96 , then the current gain (β\beta) of the amplifier is

    Tap an option to check your answer.

  3. Question 3

    11 Apr 2026 S2

    148
    In common emitter mode of transistor, the d.c. current gain is 2020, the emitter current is 77 mA. The collector current is

    Tap an option to check your answer.

  4. Question 4

    13 Apr 2026 S1

    149
    In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is

    Tap an option to check your answer.

  5. Question 5

    14 May 2026 S1

    150
    For a transistor, the current ratio αDC=6970\alpha_{DC} = \dfrac{69}{70}. The current gain βDC\beta_{DC} is

    Tap an option to check your answer.