Download TWENTY FIRST CENTURY SCIENCE P5

P5 Electric circuits advance planning page 1
TWENTY FIRST CENTURY SCIENCE
Technicians’ advance planning sheets
P5 Electric circuits
This table shows items that may need to be ordered in advance for this module. It does not
list standard items such as OHT pens.
Full details of the resources needed for each activity are given in the Requirements section
of the Teacher & Technician notes published by OUP, which also include safety information
for the activity.
Activity
Item(s)
Quantity per
Notes
student/group
of students or
for teacher
AP5.1
Polythene strips
2 per group
Cellulose acetate strip
1 per group
Piece of cloth
1 per group
Hanging stirrup
1 per group
Thread
1 reel
Hair dryer
1
Van der Graaf generator
1
Hair dryer
1
Hair wig or piece of fur
1
Rice Krispies
Handful
Small aluminium pie case, 8-10
cm diameter
6
AP5.2
Bubble mixture with blower
AP5.6
AP5.8
1
Connecting lead from base of V
d G to stud on bottom of
screwdriver
1
Battery or power pack
1 per group
1.5 V lamps in holders
2 per group
Small motor
1 per group
Ammeter
1 per group
Connecting leads
6 per group
Buzzer
1 per group
1.5 Cell in holder
1 per group
Connecting leads for above
6 per group
Milliammeter 100mA
1 per group

Demonstration.
Not too dry – fresh is not
best.
1
Electrician’s screwdriver with
neon lamp
Resistors 150
Clean & dry. If they are
washed do not use fabric
conditioner.
variety/ group
1
See technical notes
Guidance AP 5.2 for
alternative.
P5 Electric circuits advance planning page 2
AP5.9
Ohm meter
1 per group
Leads for above
AP5.10
10 resistor
1 per group
Resistor networks
1 of each of 6
different
networks
Make on breadboards see
diagrams Guidance AP5.9.
Bucket of water
1
Demonstration.
Tubing clips
Flexible hose outlets in
base.
Cloths/mop
For controlling flow.
AP5.12
Resistor e.g 22
1 per group
Power supply or battery pack
1
Ammeter
1
AP5.14
Demonstration.
Power supply unit
1
LDR board or unit
1
LED unit
1
Thermistor unit with variable
resistor
1
Ohmmeter
LDR
Lamp (optional)
Thermistor
AP5.16
1
UNILAB Boards or similar
Heater unit
Variable voltage.
Matched to resistor.
Leads 4 mm
Switch
See Guidance sheet
AP5.12.
1
1 per group
1 per group
1 per group
1 per group
Battery (a.k.a cell)
1 per group
Buzzer
1 per group
Switch
1 per group
Lamps
3 per group
Motor
1 per group
Resistors
2 per group
Voltmeter
1 per group
Connecting leads
2
From RS or Maplin see
guidance sheet AP5.14 for
values.
P5 Electric circuits advance planning page 3
AP5.17
Battery
1 per group
Switch
1 per group
Resistors
3 per group
Voltmeter
1 per group
Connecting leads
6 per group
Power supply
1
Lamps in holders
1
Ammeter
1
Voltmeter
1
Connecting leads
6 per group
AP5.22
Electrical appliances with clear
rating plates e.g. kettle, toaster,
iron, hair dryer, drill, microwave
etc.
1 of each per
class
AP5.23
1.5 V lamps in holders
3
1.5 V batteries
3
60 W mains lamp
1
Mains current meter
1
0.3 A torch bulb
1
Ammeter
1
Power supply – continuously
variable
1
or potential divider circuit.
Variable Low voltage supply
with high current capacity
1
Demonstration.
AP5.20
AP5.24
Pieces of nichrome/constantan
wire (10 cm) of different
thicknesses
2 same value & 1 different.
Use one that if it is current
limited the maximum current
with 3 bulbs is not over the
limit – bulbs will get dimmer
if maximum is reached.
Demonstration.
e.g. Brennenstuhl ‘wattage
and current meter’ available
from Maplins approx. £25
www.maplin.co.uk
1 of each
Or 3 A fuse.
Thin copper wire
Leads with 4mm and crocodile
clips
Wood shavings
Or paper or even a few
hairs.
3
P5 Electric circuits advance planning page 4
AP5.26
AP5.29
Light bulbs with same electrical
power rating but different
brightness
2
Demonstration.
9 W fluorescent bulb and 9
W filament bulb.
Identical lamp holders to take
the bulbs
2
Joulemeter and/or mains
wattage and current meter’
1
For stage 1;
Demonstration.
Ceramic magnets
Several
Steel U support
1
Cable – long
1
Sensitive galvanometer e.g.
Scalamp
1
Same as used for making
model motors.
Ends connected to Scalamp.
For stages 2 & 3:
Solenoid
Milliameter
Bar magnet
Datalogger (optional) connected
to large screen
AP5.30
1
1
1
1
Also:
Very strong magnet
e.g Eclipse
1
Coil with large number of turns
1
Piece of soft iron
1
Hand-held generator
1per group
Torch lamp (bulb) in holder
1 per group
Voltmeter (optional) a.c or d.c.
1 per group
Check generator for ac or
dc.
CRO (or equivalent datalogger)
1
Demonstration.
Model a.c. generator
(or coil with pair of ceramic
magnets
1
Connecting leads
AP5.31
Battery
Light bulb
RCCB if available
1
1
1
4
e.g Helmholtz coil
laminated transformer Ccore.
P5 Electric circuits advance planning page 5
AP5.32
Set of labelled photographs
containing pictures of:
1 set per
group
Ideally pictures should be
taken locally.
The generator in a power
station
Photographs can be
downloaded from;
The connection from the
generator to the national grid
www.nationalgrid.com/uk/
and
Supergrid pylons (44KV)
www.corbis.com
132 KV pylons
Grid transformer
11 KV power lines
A local distribution transformer
An underground cable to a
house
An electricity meter and
consumer unit
230 V socket
AP5.33
C-cores made of thin iron wire
2 per group
Thin insulated wire
2 per group
2-3 cm long.
Low voltage ac power supply
1 per group
e.g Westminster Kit.
Battery pack or smooth dc
supply
1 per group
1 per group
Light bulb in holder (150 mA
bulb)
Connecting leads
AP5.34
C-cores
2 per group
Thin insulated wire
2 per group
2 –3 cm long.
Low voltage a.c. power supply
1 per group
e.g. Westminster Kit.
a.c.voltmeter
1 per group
Connecting leads
© in this format University of York (UYSEG) and Nuffield Foundation 2006
5