Electronics 1 (PHYS2241)
BSc, Physics - PHYS
Semester: Second Semester
Level: 200
Year: 2016
UNIVERSITY OF BAMENDA FACUTY OF SCIENCE
DEPARTMENT OF PHYSICS.
COURSE TITLE: ELECTRONICS 1. COURSE CODE: PHYS2241.
CONTINUOUS ASSESSMENT, 2015/2016 ACADEMIC YEAR.
ANSWER ALL QUESTIONS. DURATION: 2HOURS
(Q1) Giving examples in each case differentiate between:
(a) Analogue and digital electronics (b) electrical and electronic engineering (c) sensors and
actuators (d) open circuit and short circuit (e) ground and earth (5mks)
(Q2) Consider the circuit in the FIG. 2 below. Under dc conditions, find: (a) ,
and
(b) the energy
stored in the capacitor and inductor. (4mks)
FIG.2
FIG.3
(Q3) Use the superposition principle to find
and
in the circuit of FIG.3 (4mks)
(Q4) Find the node voltages for the circuit in FIG.4 below.(5mks)
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(Q5) Find
and in the circuit of FIG.5 below. (5marks)
FIG.5
FIG.6
(Q6) (a) State the Thevenin and Norton theorems. (2mks)
(b) Obtain the Thevenin and Norton equivalent circuits at the terminals a-b of the circuit in
FIG.6 above. (5mks)
(Q7) (a) What is a donor impurity? (1mk)
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(b) Using diagrams describe the formation of an n-type semiconductor and draw the corresponding
energy band diagram. (3mks)
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