Lesson 3

TTO 3 — Physics
Chapter 1. Electricity
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TTO 3 — Physics
Chapter 1. Electricity

Slide 1 - Tekstslide

TTO 3 — Physics
Chapter 1. Electricity
This lesson
  • Recap
  • Practice exercise
  • Discussing the homework
  • Start section 2

Slide 2 - Tekstslide

Recap

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Electrical power
Power=timeEnergy
P=tE
New physical quantity:
Power

Unit of power:
  • Watt (W) (Joule/second)
  • Kilowatt (KW) (kilojoules/second)

Formula
  • P: power (Watt) (W)
  • E: energy (Joule) (J)
  • t: time (seconds) (s)
The amount of energy something generates or uses per unit of time.


Example: An LED light has a power
of 9 watts (It uses 9 joules per second).

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Discussing the homework
Section 1.
Exercise 3, 4, 5, 6 & 8

Slide 9 - Tekstslide

Section 2
Transporting electrical energy

Slide 10 - Tekstslide

Homework
Section 2
Read section 2 - The electricity grid
Do section 2 - Exercise 1 and 2

Slide 11 - Tekstslide