7Px 21 Whiringa-ā-Nuku 20137Px 21 Whiringa-ā-Nuku 2013What we will do What we will learnPreliminaries and roll The importance of

starting well

Look at resistance, reactance and impedance

What impedance is, what it is measured in and how to find it.

Extend LR and CR circuits to LCR circuits

How inductors, capacitors and resistors work together in a series circuit AND how their voltages and impedances combine

HRT and HW marking (AC units 1 – 6)

How to handle AC questions

7 Physics Homework MarkingNo. of marks

What for

1 Having sketches and FULL working

1 Neat presentation and down-page format

1 Answer underlined and units given

1 Self marked and all correct – eventually

1 In on time and signed for (“This is my own work”…….)

Total A mark out of five that will contribute to the “homework” grade in the reports

HW item Skills practised WavesUnits 5, 6, 7 and 9Due Wed 14 August 13

Twin Source Interference and Doppler Effect

Resistors in DCUnits 1 - 3Due Wed 25 September 13

Revision of Y12 Electricity, Internal Resistance, Kirchhoff’s Laws

Capacitors in DCUnits 1 - 4Due Wed 16 October 13

Capacitance, the capacitor construction formula, networks of capacitors, time constant and CR circuits

Inductors in DCUnits 1 - 6Due Tues 22 October 13

Revision of Y12 Induction, Faraday’s Law, Lenz’s Law, Transformers, Self Inductance, Time constants in inductors