NEET Physics Semiconductor Electronics-Materials,Devices & simple Circuits Class 12 Questions

In figure given below, assuming the diodes to be ideal

If each diode in figure has a forward bias resistance of 25 Ω and infinite resistance in reverse bias, what will be the values of the currents I₃ and I₄?

In the case of forward biasing of p-n junction, which one of the following figures correctly depict the direction of flow of carriers?

From the graph between current (I) and voltage (V) is shown. Identify the portion corresponding to negative resistance

Which type of semiconductor is formed when silicon or germanium is doped with a trivalent impurity?

What is the threshold voltage for a silicon diode?

What type of semiconductor is formed when silicon is doped with a pentavalent element?

What is the cut-in voltage for a silicon diode?

What is the primary reason semiconductor devices do not require an external vacuum like vacuum tubes?

What is the primary function of a junction diode when used in a half-wave rectifier circuit?

What type of semiconductor is formed when silicon is doped with a pentavalent element?

What happens to the barrier height of a p-n junction diode under forward bias when the applied voltage is significantly increased?

What is the energy gap called that exists between the top of the valence band and the bottom of the conduction band?

What type of semiconductor is formed by doping tetravalent silicon with trivalent acceptor atoms?

What occurs at a p-n junction under equilibrium?

What happens to the acceptor atoms in a p-type semiconductor at room temperature?

What is the consequence of exceeding the rated reverse current in a p-n junction diode?

At absolute zero temperature (T = 0 K), what is the behavior of an intrinsic semiconductor?

What type of semiconductor is formed when silicon or germanium is doped with a trivalent impurity?

Which of the following statements accurately describes the energy gap in insulators?

What is the characteristic of a material with a large band gap (E_g > 3 eV)?

What type of semiconductor is formed when silicon or germanium is doped with a trivalent impurity like Aluminium, Boron, or Indium?

What is the cut-in voltage for a silicon diode?

What type of semiconductor is formed by doping silicon or germanium with a trivalent impurity?

What are the majority carriers in n-type semiconductors?

What is the gap between the top of the valence band and the bottom of the conduction band called?

What is the threshold voltage for a silicon diode?

What is the term used to describe the gap between the top of the valence band and the bottom of the conduction band?

What is formed when a p-type silicon semiconductor wafer is doped with a pentavalent impurity?

What happens to the potential barrier in a p-n junction when a forward bias is applied?

What happens to an intrinsic semiconductor at a temperature above absolute zero?

In a p-type semiconductor, what primarily causes the density of holes in the valence band at room temperature?

Which of the following statements about p-type semiconductors is correct?

Which of the following statements about semiconductors is correct?

What is the term for the energy gap between the valence band and the conduction band in semiconductors?

Which of the following statements about the properties of semiconductors and diodes is correct?

Which of the following statements about semiconductor energy bands and conduction is correct?

Which of the following statements about p-n junctions is correct?

Which of the following statements regarding a p-n junction is correct?

Which of the following statements regarding the behavior of intrinsic and extrinsic semiconductors is correct?

Which of the following combinations about the energy band gap and charge carriers in semiconductors is correct?

Which of the following statements about the behavior of a diode in a rectifier circuit during an AC cycle is correct?

Which of the following statements about p-type and n-type semiconductors is correct?

Which of the following statements about semiconductor behavior at the p-n junction is correct?

Which of the following statements about semiconductor behavior is correct?

Which of the following statements about p-n junctions and their behavior under biasing conditions is correct?

Which of the following statements about intrinsic semiconductors is correct?

Which of the following statements about p-type semiconductors is correct?

Which of the following combinations about the behavior of charge carriers in semiconductors is correct?

Which of the following statements about semiconductor devices and vacuum tubes is correct?