# Lesson 9

1 / 20
Slide 1: Tekstslide
NaskMiddelbare schoolhavo, vwoLeerjaar 2

In deze les zitten 20 slides, met interactieve quizzen, tekstslides en 1 video.

Lesduur is: 45 min

## Onderdelen in deze les

Demonstration

#### Slide 2 -Tekstslide

This lesson
• Demonstration
• recap quiz
• What is voltage?
• What is resistance?

#### Slide 3 -Tekstslide

Learning goals

• You can explain what resistance is in your own words.

• You can explain what voltage is in your own words.

• You can describe the difference between how current is measured and how voltage is measured.

• You can describe how voltage gets divided over series and parallel circuits.

#### Slide 4 -Tekstslide

An iPhone charger uses a current of 0.08 ampere when connected to a European socket. With this current it takes an iPhone 12, 2 hours and 8 minutes to go from 0% to 100%. How much coulomb flew through the wire in this time?

A
576 C
B
0.224 C
C
614.5 C
D
96000 C

#### Slide 5 -Quizvraag

A current of 0,6 A flows out of the battery. What is the current flowing through each lamp?
A
0.2 A
B
0.6 A
C
0.3 A
D
1.2A

#### Slide 6 -Quizvraag

A current of 0,6 A flows out of the battery. What is the current flowing through each lamp?
A
0.2 A
B
0.6 A
C
0.3 A
D
1.2A

#### Slide 7 -Quizvraag

Current out battery = current component 1 = current component 2 =....
Series circuits
Current out battery = current branch 1 + current branch 2 +....
Parallel circuits

#### Slide 8 -Tekstslide

Resistance & voltage

#### Slide 9 -Tekstslide

What is resistance?
Resistance is the opposition to current flow.

#### Slide 10 -Tekstslide

Resistance

Symbol: R

Unit: Ohm
Symbol for Ohm: Ω

Resistance is the opposition to current flow.
Examples:
• Resistance = 5 Ohm
• R = 5 Ω

#### Slide 11 -Tekstslide

What is voltage?
Voltage is the difference in the amount of electrical energy between two points in a circuit.

(also known as potential difference)

#### Slide 13 -Video

Voltage

Symbol: V

Unit: Volt
Symbol for Volt: V

Voltage (potential difference) is the difference in the amount of electrical energy between two points in a circuit.
Examples:
• Voltage = 5 volts
• V = 5 V

#### Slide 15 -Tekstslide

• What is the difference between how you connect an ammeter and a volt meter in a circuit?

• How does voltage get divided over series and paralel circuits?

#### Slide 16 -Tekstslide

• What is the difference between how you connect an ammeter and a volt meter in a circuit?
An ammeter gets connected in series while a volt meter gets connected parallel.

#### Slide 17 -Tekstslide

• How does voltage get divided over series and paralel circuits?
Series
Parallel
Voltage
Gets divided over the components
The same at every circuit loop.

#### Slide 18 -Tekstslide

Homework
• Read 9.8 + 9.9
• Do the yellow block exercises of 9.8
• Do the yellow block exercises of 9.9

#### Slide 19 -Tekstslide

Learning goals

• You can explain what resistance is in your own words.

• You can explain what voltage is in your own words.

• You can describe the difference between how current is measured and how voltage is measured.

• You can describe how voltage gets divided over series and parallel circuits.