Science year 2.4: Circuits

2.4 Circuits
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Slide 1: Slide
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This lesson contains 36 slides, with interactive quizzes, text slides and 2 videos.

time-iconLesson duration is: 45 min

Items in this lesson

2.4 Circuits
Welcome today

Slide 1 - Slide

2.4 Circuits
Looking back to 2.3

2.4 Circuits (series and parallel)

Preparing for the test in the testweek (in 2 weeks)

Slide 2 - Slide

Which of the following is an energy source
A
chemical energy
B
Battery
C
Solar energy
D
Sound energy

Slide 3 - Quiz

Kinetic energy
Thermal energy
Chemical energy
Electric energy
Nuclear energy
Sonic energy
Energy that results from movement of an object
Energy resulting from a temperature difference between two systems
Energy resulting from reactions between atoms and / or molecules
Energy resulting from the flow of electrons
Energy resulting from changes in the atomic nuclei or from nuclear reactions
Energy in the form of sound waves

Slide 4 - Drag question

Energy
Power
Time
Voltage
current
I
P
U
E
t

Slide 5 - Drag question

What is the unit for electrical current?
A
V for Voltage
B
A for amps
C
W for Watts
D
v for Speed

Slide 6 - Quiz

2.4 Circuits
  • What are the basic components for building a circuit
  • Draw circuit diagrams
  • Advantages and disadvantages of series circuit
  • Advantages and disadvantages of a parallel circuit
  • Calculate current and voltage at various point in a circuit
  • Use a (am or volt)meter to measure current and voltage

Slide 7 - Slide

2.4 Circuits

Slide 8 - Slide

2.4 circuits

Slide 9 - Slide

Place the correct symbol behind the electrical components
Battery
Wire
Switch
Light bulb
LED
Mains socket

Slide 10 - Drag question

2.4 Circuits - Series
all components are in the same loop, end to end.

There is only one way the current can flow

Same current throughout the entire circuit

Voltage is shared by all components in the circuit

Slide 11 - Slide

2.4 Circuits - series

Slide 12 - Slide

every am-meter will show the same value
The voltage is shared by all components

Slide 13 - Slide

What happens to the voltage when there are more components in a series circuit?
A
every component gets the same voltage
B
one component gets all of the voltage
C
The voltage is shared by all components
D
this won't work

Slide 14 - Quiz

Which type of energy is stored in a fuel?
A
Heath
B
Nuclear
C
Chemical
D
Electric

Slide 15 - Quiz

2.4 Circuits - Parallel
multiple loops or paths for the current to flow through

currents is divided through every pathway

Voltage is the same for all components


Slide 16 - Slide

2.4 Circuits - Parallel

Slide 17 - Slide

voltage same for all components
Current is divided
current only divides equally if components are the same

Slide 18 - Slide

Slide 19 - Video

voltage is the same for all components
current is the same throughout circuit
Series
Parallel
Still works if one lamp is broken
If you connect batteries this way, you can add their voltages

Slide 20 - Drag question

J
W
s
V
A
I
P
U
E
t

Slide 21 - Drag question

..chemical energy to kinetic energy..

This is called
A
an energy conduction
B
an energy transcription
C
an energy insulation
D
an energy conversion

Slide 22 - Quiz

2.4 Circuits - Measuring
You can measure Current (A) with an am-meter

You can measure Voltage (V) with a voltmeter

You can measure both with a multimeter

Slide 23 - Slide

Slide 24 - Slide

Am-meter
Measuring current

Current must run through meter

meter is IN the circuit

(how much electrons pass through the wire every second, amps)

Slide 25 - Slide

voltmeter connected parallel
Voltmeter has no influence on the current though the component

Slide 26 - Slide

A voltmeter
A
must be parallel with the component
B
Must be in series with the component

Slide 27 - Quiz

What is the value
of this voltmeter?
A
2,5 volt
B
25 volt
C
12,5 volt
D
0 volt

Slide 28 - Quiz

Single loop circuit
conventional
current
Current from the positive terminal to the negative terminal
series circuit
Digital ammeter
Analog Ammeter

Slide 29 - Drag question

What was renewable energy?
A
New types of energy
B
It does not run out, it renews itself
C
energy that consists of waves
D
It runs out, so we won’t be able to use it forever

Slide 30 - Quiz

What is needed for conduction
A
molecules that can move around freely
B
no molecules at all
C
molecules very close to each other
D
al lot of different types of molecules

Slide 31 - Quiz

If you connect 4 batteries of 1.5 volts in series, you get a total voltage of:
A
5,5 volt
B
6,0 volt
C
2,66 volt
D
2,5 volt

Slide 32 - Quiz

the battery has a voltage of 5 V
How much volt for a lamp?
A
2.5 V
B
10 V
C
5 V
D
0 V

Slide 33 - Quiz

There is a current of 5 amps going at point A
How much current runs through each lamp?
A
A
2.5 A
B
10 A
C
5 A
D
0 A

Slide 34 - Quiz

Slide 35 - Video

2.4 Circuits - you should be able to 
the basic components for building a circuit
draw circuit diagrams
advantages and disadvantages of series circuit
Calculate current and voltage at various point in a circuit
advantages and disadvantages of a parallel circuit
Use a (am or volt)meter to measure current and voltage

Slide 36 - Slide