Page 545 - SUBSEC October 2017_Neat

UNIT 2
MODULE 1: ELECTRICITY AND MAGNETISM (cont’d)

SPECIFIC OBJECTIVES EXPLANATORY NOTES SUGGESTED PRACTICAL
ACTIVITIES

4. Capacitors

Students should be able to:

4.1. define capacitance;

4.2. use the equation
Q
C = to solve problems;
V

4.3. use the formula

=
εA
C = ; εr – relative permittivity or
d
dielectric constant
ε0 – permittivity of free
space.
Refer to the use of
dielectrics to produce
capacitors of larger values
with the same dimensions.
Mention the types of
dielectrics and the range of
their dielectric constants or
relative permitivity.

4.4. derive formulae for
capacitors in parallel and
series to solve problems;

4.5. use formulae for capacitors Include problems on
in parallel and series to solve equivalent capacitance for
problems; simple series parallel
combinations.

4.6. use the formulae for energy Discussion on the
stored in a capacitor as mechanism of energy
2 storage in a capacitor.
= , =
2 2
2
=
2
to solve problems;

CXC A16/U2/17 45