Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETPhysicsSemiconductors

Two identical p-n junction diodes, D₁ and D₂ , are connected in parallel between two electrical terminals A and B . Diode D₁ has its p-side connected to terminal A and its n-side connected to terminal B . Diode D₂ has its n-side connected to terminal A and its p-side connected to terminal B . If the depletion width of D₁ is observed to be strictly greater than the depletion width of D₂ , which of the following repres

Options

  1. AV_A > V_B
  2. BV_A = V_B
  3. CBoth V_A and V_B must be negative
  4. DV_A < V_B

Correct answer

D. V_A < V_B

Step-by-step solution

The width of the depletion region of a p-n junction increases under reverse bias and decreases under forward bias, compared to its unbiased equilibrium state. Given that the depletion width of D₁ is greater than that of D₂ , D₁ must be reverse-biased while D₂ is forward-biased. For D₁ to be reverse-biased, its p-side (connected to A ) must be at a lower potential than its n-side (connected to B ). Therefore, V_A Similarly, for D₂ to be forward-biased, its p-side (connected to B ) must be at a higher potential than

Practice Semiconductors on Quantrex Academy →

More from Semiconductors

For two inputs A and B and output Y, the Boolean expression for NOR gate is 2026For an n-type semiconductor, the relation between the number density ' n_h ' and ' n_e ' is 2026A silicon crystal is doped with 5 10¹⁷ cm ⁻³ atoms of boron. The electron concentration (n_e) at room temperature is (n_i = 1.5 10¹⁰ cm ⁻³) 2026If the current gain in common-base configuration ( ) of a transistor increases from 0.95 to 0.96, the percentage change in current gain in common-emitter configuration ( ) is appro 2026Out of the following what is used to detect the intensity of light ? 2026The color of light emitted by an LED is determined primarily by which of the following factors? 2026Which of the following is true for a p-type semiconductor? 2026In case of semiconductors, the band gap between the valence band and conduction band is 2026 Full Semiconductors list All NEET PYQs