Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202519 Apr 2025Morning ShiftPhysicsSemiconductorsActual

For a common emitter transistor, if I _ C I _ E =0.95 , then the current gain is

Options

  1. A47.5
  2. B44
  3. C19
  4. D15

Correct answer

C. 19

Step-by-step solution

The current gain in a common base configuration is α , defined as = I_C I_E . Given I_C I_E = 0.95 , it follows that = 0.95 . The current gain in a common emitter configuration, β , relates to by = 1 - . Substituting yields = 0.95 0.05 = 19 . The current gain is 19.

Practice Semiconductors on Quantrex Academy →

More from Semiconductors

Pick out the correct statement from the following; 2026What is the minimum wavelength of radiation required to detect a p-n junction diode made of a semiconductor having band gap 3.3 eV. [Planck's constant h = 6.6 10³⁴ J.s ] 2026Genetic Engineering is related to the principle of 2026A silicon sample is doped simultaneously with donor impurity phosphorus at a concentration of N_D = 3 10²² m⁻³ and acceptor impurity boron at a concentration of N_D = 2.8 10²² m⁻³ 2026In a PN junction diode, the forward bias is increased gradually from 0 Volt to 1 Volt. Which of the following statements is correct? 2026In the circuit given, the reverse breakdown voltage of the Zener diode is 4.8 V. The current through the Zener and the power dissipation in Zener is: 2026An n-type and p-type semiconductor can be obtained by respectively doping pure silicon with 2026In which of the following figures, diode is reverse biased? 2026 Full Semiconductors list All MHT CET PYQs