Chenab College Jaranwala BSCS

                                                                  Basic Electronics

Q.No.1: - Define valence shell.

Q.No.2: - How the energy vary in different shell of atom.

Q.No.3: - Define ionization.

Q.No.4: - How ionization takes place?

Q.No.5: - When an atom becomes a positive ion and when it becomes a negative ion?

Q.No.6: - Define insulator.

Q.No.7: - Define electric current.

Q.No. 8: - Why electric current does not conduct through insulators under normal conditions?

Q.No.9: - Define conductors.

Q.No.10: - Why electric current pass through conductors?

Q.No.11: - Define semiconductors. Also give its examples.

Q.No.12: - What are the types of semiconductors?

Q.No.13: - What is conduction band also define energy gap.

Q.No.14: - Why germanium is more unstable at high temperature and why silicon is widely used than germanium?

Q.No.15: - What is the process of doping?

Q.No.16: - What are the p-type and n-type semi-conductors?

Q.No.17: - Describe a diode and how a pn junction is formed?

Q.No.18: - Discuss the diffusion across a pn junction.

Q.No.19: - Distinguish between conductors insulators and semi conductors on the basis of energy band theory also draw diagrams.

Q.No.20: - Describe the V-I characteristics for reverse biasing a diode in practical model using graph.

Q.No.21: - Describe what is the effect of barrier potential during forward biasing and reverse biasing.

Q.No.22: - Describe the motion of electron and holes in a semiconductor.

Q.No.23: - Explain how to generate the forward bias portion of the characteristic curve.