Calculators/Sakrekenaars:
Requirements for this paper/Benodigdhede vir hierdie vraestel:
Answer scripts/
Antwoordskrifte:
X
Yes/Ja
Other resources/Ander hulpmiddels:
Multi-choice cards (A5)/
Multikeusekaarte (A5):
Attendance slips (Fill-in paper)/
Presensiestrokies (Invulvraestel):
Multi-choice cards (A4)/
Multikeusekaarte (A4):
Scrap paper/
Rofwerkpapier:
Graph paper/
Grafiekpapier:
Type equation here.
Type of assessment/
Tipe assessering:
Assignment 1
Qualification/ BSc Extended
Kwalifikasie:
Module code/
Modulekode:
SFEM 171
Duration/
Tydsduur:
Module description/
Modulebeskrywing:
Electricity & Magnetism Circuits
Max/
Maks:
50
Examiner(s)/
Eksaminator(e):
Mr O Tlhapane
Due Date/
Datum:
26/08/2022
Instructions:
1. Attempt all the assignment questions
2. Show all the necessary steps and diagrams
Question 1
1.1
For a parallel plate capacitor that has two dielectrics, side by side, shown in Fig.1,
find the capacitance in terms of 𝑨 and 𝒅
Figure 1
SFEM 171 | ELECTRICITY & MAGNETISM CIRCUITS | ASSIGNMENT 1 | 2022
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1.2
For a parallel plate capacitor that has two dielectrics, stacked, shown in Fig.2, find
the capacitance in terms of 𝑨 and 𝒅
Figure 2
[5]
Question 2
2.1
Find the voltage across and the charge on each capacitor for the circuit in Fig.3.
Figure 3
2.2
[12]
Find the total capacitor 𝑪𝑻 and total energy 𝑬𝑻 stored in terms of 𝑸𝑻 if 𝑽𝑻 = 𝟒𝟖𝑽
for the circuit in Fig.4.
Figure 4
SFEM 171 | ELECTRICITY & MAGNETISM CIRCUITS | ASSIGNMENT 1 | 2022
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2.3
For the circuit in Fig.5, let 𝒗 = 𝟏𝟎𝒆−𝟑𝒕 𝑽 and 𝒗𝟏 (𝟎) = 𝟐𝑽. Determine:
a) 𝒗𝟐 (𝟎)
b) 𝒗𝟏 (𝒕) 𝐚𝐧𝐝 𝒗𝟐 (𝒕)
c) 𝒊(𝒕), 𝒊𝟏 (𝒕) 𝐚𝐧𝐝 𝒊𝟐 (𝒕)
Figure 5
SFEM 171 | ELECTRICITY & MAGNETISM CIRCUITS | ASSIGNMENT 1 | 2022
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