2T electricity 4.2

• Natuurkunde
• Middelbare school
• vwo
• Leerjaar 3

Electricity

§2  Voltage sources

Welcome!

Homework from last time

2, 3, 4, 6, 7, 8

Learning objectives

• You can explain what voltage is.
• You can explain what a voltage source is.
• You can calculate the combined voltage of connected batteries. 

What do you still remember about 'electrical current'?

What is voltage?

What is voltage?

We measure voltage in Volts (V) with a Voltmeter.

What is voltage?

We measure voltage in Volts (V) with a Voltmeter.

A voltage source delivers a 

voltage to an electrical device

--> example: batteries!

Connecting batteries

Mains voltage

The voltage out of electrical sockets is always 230V!

Mains voltage

The voltage out of electrical sockets is always 230V!

This voltage is called the mains voltage.

Mains voltage

The voltage out of electrical sockets is always 230V!

This voltage is called the mains voltage.

For reference: A battery has a voltage 

below 24V --> Transformers.

Working on the exercises

Read: p. 124 - 126

Make: 3, 4, 6, 7, 8

Not finished? --> Homework!