BTEC Assignment Brief
Pearson BTEC Level 3 National Extended Certificate in Applied
Science
Pearson BTEC Level 3 National Foundation Diploma in Applied
Qualification
Science
Pearson BTEC Level 3 National Diploma in Applied Science
Pearson BTEC Level 3 National Extended Diploma in Applied Science
Unit number and title Unit 15: Electrical Circuits and their Applications
A: Understand electrical symbols, units, definitions, relationships and
properties of circuit components for use in the construction of
Learning aim circuits.
B: Construct series and parallel circuits for use in standard electrical
applications and measure electrical values.
Assignment title Circuits
Assessor
Issue date
Hand in deadline
You are a trainee technician working for a company that specialises
in producing specialist medical equipment such as
electrocardiography, electromyography and
electroencephalography machines. As part of your induction, you
Vocational Scenario or have been asked to produce a report that demonstrates your
Context knowledge of electrical concepts and shows that you are able to
assemble various electrical circuits.
Using your notes and research, produce an ‘Electrical Circuits
Information Report’ containing the following sections:
Section 1 – Electrical symbols, units and definitions
State the symbols for the following cell components in a table:
cell
Task battery
switch
filament lamp
fixed resistor
thermistor
light emitting diode (LED)
light-dependent resistor (LDR)
rheostat
capacitor
voltmeter
ammeter.
Produce a ‘Glossary of Terms’ that defines and gives a brief
explanation of each of the following:
current (ampere)
potential difference (volt)
electrical charge (coulomb)
, resistance (ohm)
conductance (siemen)
electrical power (watt)
capacitance (farad and sub-units)
current in terms of rate of flow of mobile charge carriers
electromotive force (EMF) as a measure of ratio of energy
supplied per unit of charge
conductance and resistance in relation to density of mobile
charge carriers.
Ensure the glossary includes the symbols for units where
applicable.
Section 2 - Electrical formulae and relationships
Draw diagrams of theoretical circuits and use the following
electrical formulae to accurately calculate a range of electrical
quantities. As part of your working, explain the following
equations and how you have applied them:
Energy supplied: W = VIt
Kirchoff’s first and second rules
Ohm’s Law: V = IR
Power: P = IV, P = I2R
Charge: Q = It
I I
Conductance: G= =
R V
pl
Resistivity: R= (Ωm)
A
Charge stored by a capacitor Q = CV
Calculations of capacitance:
o In parallel circuits C T = C1 + C2
1 1 1
o In series circuits = =
CT C 1 C 2
Section 3 - Electrical properties and uses of materials
Choose suitable examples of materials and their uses in order to
provide an illustrated explanation of the properties of the
following: conductivity, resistivity, insulators and conductors,
ohmic and non-ohmic conductors, capacitors acting as filters in AC
circuits and semi-conductors.
2
BTEC Assignment Brief v1.0
BTEC Internal Assessment QDAM January 2015
Pearson BTEC Level 3 National Extended Certificate in Applied
Science
Pearson BTEC Level 3 National Foundation Diploma in Applied
Qualification
Science
Pearson BTEC Level 3 National Diploma in Applied Science
Pearson BTEC Level 3 National Extended Diploma in Applied Science
Unit number and title Unit 15: Electrical Circuits and their Applications
A: Understand electrical symbols, units, definitions, relationships and
properties of circuit components for use in the construction of
Learning aim circuits.
B: Construct series and parallel circuits for use in standard electrical
applications and measure electrical values.
Assignment title Circuits
Assessor
Issue date
Hand in deadline
You are a trainee technician working for a company that specialises
in producing specialist medical equipment such as
electrocardiography, electromyography and
electroencephalography machines. As part of your induction, you
Vocational Scenario or have been asked to produce a report that demonstrates your
Context knowledge of electrical concepts and shows that you are able to
assemble various electrical circuits.
Using your notes and research, produce an ‘Electrical Circuits
Information Report’ containing the following sections:
Section 1 – Electrical symbols, units and definitions
State the symbols for the following cell components in a table:
cell
Task battery
switch
filament lamp
fixed resistor
thermistor
light emitting diode (LED)
light-dependent resistor (LDR)
rheostat
capacitor
voltmeter
ammeter.
Produce a ‘Glossary of Terms’ that defines and gives a brief
explanation of each of the following:
current (ampere)
potential difference (volt)
electrical charge (coulomb)
, resistance (ohm)
conductance (siemen)
electrical power (watt)
capacitance (farad and sub-units)
current in terms of rate of flow of mobile charge carriers
electromotive force (EMF) as a measure of ratio of energy
supplied per unit of charge
conductance and resistance in relation to density of mobile
charge carriers.
Ensure the glossary includes the symbols for units where
applicable.
Section 2 - Electrical formulae and relationships
Draw diagrams of theoretical circuits and use the following
electrical formulae to accurately calculate a range of electrical
quantities. As part of your working, explain the following
equations and how you have applied them:
Energy supplied: W = VIt
Kirchoff’s first and second rules
Ohm’s Law: V = IR
Power: P = IV, P = I2R
Charge: Q = It
I I
Conductance: G= =
R V
pl
Resistivity: R= (Ωm)
A
Charge stored by a capacitor Q = CV
Calculations of capacitance:
o In parallel circuits C T = C1 + C2
1 1 1
o In series circuits = =
CT C 1 C 2
Section 3 - Electrical properties and uses of materials
Choose suitable examples of materials and their uses in order to
provide an illustrated explanation of the properties of the
following: conductivity, resistivity, insulators and conductors,
ohmic and non-ohmic conductors, capacitors acting as filters in AC
circuits and semi-conductors.
2
BTEC Assignment Brief v1.0
BTEC Internal Assessment QDAM January 2015
