Electrical Power and Electrical energy in kWh
Domestic Electricity
Alternating Current - RMS value
Preparation - Chapter 3.1a, Chapter 3.1b, Chapter 3.1c
Participation - Assignment P.134 Q7, 8, 10, 12, 13 and P.154 Q24
Presentation - Blackboard, Student's Work
Possession
> Temperature is a measure of average molecular kinetic energy
> Celsius scale, Fixed points: ice point and steam point (Why? easily reproduced!) under normal atmospheric pressure (What if pressure changes?)
Chapter 3.1a (4:53) 184
Chapter 3.1b (3:59) 146
Chapter 3.1c (1:55) 143
Preparation - Chapter 3.2a, Chapter 3.2b
Participation - Assignment P.148 Q7, 8 and P.153 Q17-21, 26, 28
Presentation - Blackboard, Student's Work
Possession
> Calibration, steps: lower fixed point, upper fixed point, divide the markings equally
> Temperature-dependent property (column length, curvature, resistance, ... changes LINEARLY with temperature (P.19 Q19(b)ii)
> PLOT graph... scale, label and mark axes, draw best-fit straight line
> More complicated calculation (e.g. P.18 Q18)
> Different thermometers, liquid-in-glass, rotary, resistance, thermistor, ... strength and weakness, and different applications (P.18 Q17)
Chapter 3.2a (9:57) 95
Chapter 3.2b (6:32) 87
REVISION VIDEO - Chapter 3
Watch Revision Video in YOUTUBE (9:06) 202
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