5.2 Voltage sources

5.2 Voltage sources
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Slide 1: Tekstslide
physicsMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 17 slides, met interactieve quizzen, tekstslides en 1 video.

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5.2 Voltage sources

Slide 1 - Tekstslide

Voltage source
                               A battery always states what voltages it supplies.

A battery supplies electrical energy. 
The current tells you how many charged particles flow past every second.
The voltage tells you how much electrical energy each particle is carrying.

Slide 2 - Tekstslide

Fig. 14
You can compare the transport of electrical energy to the transport of petrol.
Current = trucks
Voltage = petrol

Or a central heating
current = water, voltage = heath

Slide 3 - Tekstslide

Connecting batteries
If you connect batteries in series (behind each other), you can add their voltages together.

Slide 4 - Tekstslide

Voltages
mains voltage = 230 V

Safe voltages = voltages untill 24 V

You can convert the mains voltage with a transformer.

Slide 5 - Tekstslide

Chemical voltage sources
Batteries are chemical voltage sources because the voltage is generated by chemical reactions.

In rechargeable batteries you can make this reaction go in the opposite direction (recharge the battery). 

Batteries are small-scale chemical waste.

Slide 6 - Tekstslide

Slide 7 - Video

17 Why do dynamos not state the voltage they deliver?
A
They were built in Russia
B
It depends on the light attached to it
C
It depends on the type of bike
D
It depends on the movement of the dynamo

Slide 8 - Quizvraag

18a. Read off
the
voltage
A
3 V
B
27 V
C
2,7 V
D
13,5 V

Slide 9 - Quizvraag

18b. Read off
the
voltage
A
18 V
B
90 V
C
9 V
D
1.8 V

Slide 10 - Quizvraag

19.

Slide 11 - Tekstslide

Slide 12 - Tekstslide

20a. What's
the voltage?
A
6 V
B
4.5 V
C
3 V
D
1.5 V

Slide 13 - Quizvraag

20b. What's
the voltage?
A
6 V
B
0 V
C
3 V
D
1.5 V

Slide 14 - Quizvraag

20c. What's
the voltage?
A
3 V
B
4.5 V
C
0 V
D
1.5 V

Slide 15 - Quizvraag

20d. What's
the voltage?
A
6 V
B
0 V
C
3 V
D
1.5 V

Slide 16 - Quizvraag

Experiment 1
https://phet.colorado.edu/sims/html/circuit-construction-kit-dc/latest/circuit-construction-kit-dc_en.html
Write down your answers and send a photo of your answers!

Slide 17 - Open vraag