6.2 Weerstand

Ω

Resistance (R)
Electric Current (I)
Voltage (V)
Ampere (A)
Volt (V)
Ohm
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Slide 1: Drag question
NatuurkundeMiddelbare schoolhavoLeerjaar 3

This lesson contains 12 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 30 min

Items in this lesson

Ω

Resistance (R)
Electric Current (I)
Voltage (V)
Ampere (A)
Volt (V)
Ohm

Slide 1 - Drag question

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Resistance
You need
Laptop
- NOVA Book B (p.75)
- Notebook
Lessonup
- YES
Exercises
3, 5

Slide 2 - Slide

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Learning Goals
After this lesson you can:
  • explain what Resistance is. 
  • recite Ohms Law.
  • calculate the resistance using Ohms Law

Slide 3 - Slide

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Resistance
Resistance is the amount of struggle the current has to flow through the circuit.

Compare it to school hallways: an empty hallway has a low resistance, a hallway full of people has a high resistance

Slide 4 - Slide

schoolgang;


kraan; 

Will running through a hallway full of people result in a higher, the same, or a lower resistance?
A
higher
B
lower
C
I don't know
D
the same

Slide 5 - Quiz

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Resistance

As you can see, the Voltage tries to push as many Amps as it can, bit the Resistance tries to limit that.
R=IU
Quantity
Symbol
Unit
Symbol
voltage
U
Volt
V
current
I
Ampere
A
resistance
R
Ohm
Ω

Slide 6 - Slide

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Calculating Resistance

Slide 7 - Slide

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Bereken de weerstand van een lamp die aangesloten is op het lichtnet, door de lamp loopt een stroom van 48 mA
A
4781,67 V
B
4781,67 Ohm
C
4,79 Ohm
D
0,0048 Ohm

Slide 8 - Quiz

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Hoe berekenen we de stroomsterkte?
A
I=UR
B
I=RU
C
I=RU
D
I=IU

Slide 9 - Quiz

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Welke bewering is waar?

A
De wet van Ohm geldt alleen als de temperatuur constant is.
B
De wet van Ohm geldt alleen als de elektrische stroomsterkte constant is.
C
De wet van Ohm geldt alleen als de elektrische spanning constant is.
D
De wet van Ohm geldt alleen als de spanningsbron regelbaar is.

Slide 10 - Quiz

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Opgave 17
  • +-10 minuten
  • samenwerken met je buurvrouw/buurman
  • Gebruik de wet van ohm:
R=IU

Slide 11 - Slide

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Lesdoelen
  • Wat is weerstand? 
  • Wat is de wet van Ohm en hoe berekenen we dit?
  • wanneer spreken we van een niet ohmse weerstand?
Huiswerk: 12,13, 15 t/m 19

Slide 12 - Slide

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