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What we will do What we will learn 13Px, Ko te Rāpare, 15 Mahuru 2016

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Presentation on theme: "What we will do What we will learn 13Px, Ko te Rāpare, 15 Mahuru 2016"— Presentation transcript:

1 What we will do What we will learn 13Px, Ko te Rāpare, 15 Mahuru 2016
Do Now: Find the DC equivalent and the peak voltage for 240V AC How to make new knowledge stick Examine the current “through” a capacitor to determine the lack of simultaneity. Why V and I do not happen at the same time. Reactance of a capacitor What reactance is, what it is measured in and how to find it. Set new HW, set a due date and have HRT How to make great use of time. Mark the HW that is overdue How to stay on track for the 15th of November (59 days)

2 HW item Skills practiced Elex: pp140 - 143 of workbook
Due Wed 31st of August 2016 Electromagnetic Flux and Faraday’s Law Elex: pp of workbook Due Thurs 16 Sept 2016 Lenz’s law Elex: pp of workbook Current growth in an inductor Elex: pp148 of workbook Due Fri 17 Sept 2016 Inductor Time Constant Elex: pp of workbook Faraday’s Law for Inductors Elex: pp of workbook Due Fri 23 Sept 2016 Transformers AC electricity intro Elex: pp157 of workbook Voltage across and Current “through” a capacitor

3 Homework Marking No. of marks What for 1
Having sketches & FULL working for all Neat presentation and down-page format Answer underlined and units given Self marked and all correct – eventually 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

4 Rāhina Rātū Rāapa Rāpare Rāmere Rāhoroi Rātapu

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8 Reference: Purple book page 157

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10 Reference Circle rotating vectors = Phasors (really!) In AC, the voltage across the capacitor LAGS the current by 90 degrees. OR the current through the capacitor LEADS the voltage across the capacitor by 90 degrees

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