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AS3.6 Electricity (External)
This external standard is worth 6 credits. You will require basic knowledge from L2 electricity to do well here. Assessment is limited to a selection from the following: 
Resistors in DC Circuits
  • Internal resistance; simple application of Kirchhoff’s Laws.
 
Capacitors in DC Circuits
Parallel plate capacitor; capacitance; dielectrics; series and parallel capacitors; charge/time, voltage/time and current/time graphs for a capacitor; time constant; energy stored in a capacitor.
 
Inductors in DC Circuits
Magnetic flux; magnetic flux density; Faraday’s Law; Lenz’s Law; the inductor; voltage/time and current/time graphs for an inductor; time constant; self inductance; energy stored in an inductor; the transformer.
 
AC Circuits

The comparison of the energy dissipation in a resistor carrying direct current and alternating current; peak and rms voltage and current; voltage and current and their phase relationship in LR and CR series circuits; phasor diagrams; reactance and impedance and their frequency dependence in a series circuit; resonance in LCR circuits.

Formulae

practice worksheet

1DC Kirchhoff_1.doc
click to download
2Capacitors.doc
click to download
3EM.doc
click to download
4Inductance.doc
click to download
5RL-RC circuits.doc
click to download
6AC Circuits cap.doc
click to download
7AC inductors.doc
click to download
8LCR.doc
click to download

revision notes: click on the Link for  notes

Video Tutorial

Past Ncea electricity  question paper and answer schedule

90523-exm-2010.pdf
click to download
90523-ass-2010.pdf
click to download
90523-exm-2011.pdf
click to download
90523-ass-2011.pdf
click to download
90522-exm-2012.pdf
click to download
91526-exm-2013.pdf
click to download
91526-exm-2014.pdf
click to download
90523-ass-2012.pdf
click to download
91526-ass-2013.pdf
click to download
91526-ass-2014.pdf
click to download