2T test preparation 2

• Natuurkunde
• Middelbare school
• vwo
• Leerjaar 2

Electricity

Preparing for the test

Welcome!

Plan for today

1. Recap of chapter 4 (probably quite long)

        > Conductors & Insulators

        > Voltage & Current

        > Series & Parallel

        > Power & Energy

2. Electricity sudokus 

Insulators and conductors

              Insulators                                                                   Conductors

Voltage and current

The electrical current is the amount of charge that passes through a device.

The voltage is the amount of energy that the charges carry.

How can we draw circuits?

We use symbols! These are some of the most important ones:

Wire

Battery

Light bulb ('lampje')

Voltmeter/ Ammeter 

Switch

LED

Series circuit

Parallel circuit

Electrical power

P is the electrical power in W

U is the voltage in V

I is the current in A

P=U⋅I

Which three substances are resistors?

1. Rubber, plastic and glas
2. Plastic, diamond and wood
3. Rubber, oil and wood
4. Plastic, oil and glass

How much voltage comes from an electrical outlet at home?

1. 2,3 volt
2. 23 volt
3. 230 volt
4. 2300 volt

If you connect 4 batteries of 1.5 volts in series, you get a total voltage of:

1. 5,5 volt
2. 6,0 volt
3. 2,66 volt
4. 2,5 volt

Wire

Battery

Light

Switch

Motor

Power outlet

In a parallel circuit, the ... is the same everywhere.

1. Current
2. Voltage
3. Energy
4. Power

Quantity

Unit

Sybmbol

symbol

Power

Current

Voltage

P

I

V

Ampère

A

W

U

Watt

Volt

How to study for the test?

Make sure you understand the blue words

Do the Test Yourself for each paragraph

Make a lot of exercises!!!