3T circuits 5.1

• Natuurkunde
• Middelbare school
• vwo
• Leerjaar 3

What's in the chapter?

§5.1 - Charge and voltage

§5.2 - Resistance

§5.3 - Connecting resistors

§5.4 - Automatic circuits

What about today?

1. Quick explanation about charge

2. Some demonstrations

3. Presentations with explanations

4. What is electrical current?

5. Time to work on exercises / questions about homework

Learning objectives

• You can explain what electrical charge is and use this to     explain phenomena caused by electrical charge.
• You can explain the relation between charge and current. 

What do you know about 'charge'?

The definition

Electric charge is a physical property of matter. It is created by an imbalance in a substance’s number of protons and electrons. The matter is positively charged if it contains more protons than electrons, and it is negatively charged if it contains more electrons than protons. In both instances, charged particles will experience a force when in the presence of other charged matter.

But what does it do?

How can we make it visible?

1. Van de Graaff generator - plates

2. Van de Graaff generator - hair

3. Balloon sticking

4. Wimhurst machine

5. Water bending

6. Coin rolling

How can we make it visible?

1. Van de Graaff generator - plates

2. Van de Graaff generator - hair

3. Balloon sticking

4. Wimhurst machine

5. Water bending

6. Coin rolling

1 & 2

3

4

5

6

Some guidelines

Van de Graaff generator

Balloon sticking

Wimhurst Machine

Water bending

Can rolling

Discharging

Discharging

How do we call this flow of electrons?

Charge & Current

Charge & Current

I=​t​​Q​​

Atoms & elementary charge

Work on the exercises