Unit 15 - Electrical Circuits and their Application
Institution
PEARSON (PEARSON)
These are the first 2 assignments incorporated together for unit 15 Electrical Circuits BTEC Applied Science. These assignments have been awarded a Distinction grade ( that’s why is a RESUBMISSION written) Bibliography can be found at the end and please do not copy, use them as a guide only. Good...
Unit 15 - Electrical Circuits and their Application
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RESUBMISSION
A: Understand electrical symbols, units, definitions, relationships, and properties of circuit
components for use in the construction of circuits.
B: Construct series and parallel circuits for use in standard electrical applications and measure
electrical values.
Cell Light emitting
diode
Battery Light dependent
resistor
Switch rheostat
Filament lamp capacitor
Fixed resistor voltmeter
thermistor ammeter
Definitions:
Terms Meaning
Current, I defines the electric charges that are moved due to the flow of electric current.
(ampere) = the electrical charge flow when there is a source that provides potential
difference and a closed circuit. Measured in amperes. The flow of charge, C =
current, A x time, s. the value of the current in a closed loop does not change.
Current Is equal when change divides by the time taken.
potential the amount of work per unit charge done by a component. This also applies to
difference, V a power source. The energy gets transferred using the charge carriers that pass
(volt) = through the components in the circuit. The voltmeter is used to measure
potential diff. the equation is V= I x R therefore the potential diff is the same as
the current multiplied by resistance. A potential difference describes how one
volt is equal to one joule that is being used by one coulomb of charge.
electrical a physical property of particles that shows how they are affected by an
charge, C/Q electrical field. Can be positive, negative or zero. The current of one amp is
(coulomb) = equal to one coulomb that passes through a point per seconds. Q=I x t.
resistance, R property of something that tries to slow down/resist the current. A bigger
(ohm) = resistance causes a smaller current to pass through a component in a circuit.
The equation is: V= I x R
conductance, measures how easily the flow of charge can travel through a material. It is the
1/R (Siemen) = inverse of resistance as R= 1/G or/and G=1/R. siemens can be also equal one
ampere per volt.
electrical rate at which the electrical energy is used through a circuit. Can be also
power, SI/P described as how much electrical work done is made per unit time. Power will
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