Pig

1
Pig P4 (a to d)

• Foundation

2
What are the names of the two types of charge?
3
Explain what happens to the cloth and the rod
when they are rubbed together? (3 marks)
4
Why is static a danger when a plane refuels?
5
How is a defibrillator used to restart the heart
(3 points)
6
How does a paint sprayer use static electricity,
include one advantage (4 points)
7
Correctly name the wires in the plug (which
colour is which)
8
Name two uses of ultrasound, other than body
scans? (2 marks)
9
How does a fuse work? (3 points)
10
Which letter shows amplitude and which letter
shows wavelength?
A
D
B
C
11
Which shows a longitudinal wave and what is a
compression?
A
B
12
What is the job of the Earth, Live and neutral
wire?
13
If an appliance is double insulated it does not
need an earth wire why?
14
How does a variable resistor affect the current
in a circuit?