@The electroscope is charged. As a charged rod is brought near the metal cap (y) the leaf (x) falls. This shows:
#escope
the rod has an opposite charge to the electroscope
the electroscope is losing charge
the electroscopes charge must be the same as the rods

@How long will it take 14 Coulombs of charge to flow if the current in a circuit is 2A?
7 seconds
0.14 seconds
98 seconds

@The diagram shows the trace on an oscilloscope. The time base was:
#scope1
turned on
turned off
doesn't make any difference whether its turned on or off

@Where does nearly all the energy used on the planet originate?
The sun
From oil and coal
From chemical reactions deep in the Earth

@If a ticker tape is made by an object which is accelerating, then the dots:
Get further apart
Remain a constant distance apart
Gradually get closer together

@On Earth the gravitational field strength is 10 N/Kg which means:
Each Kg has a weight of 10 Newtons
One Newtons weighs 10 Kg
One Kg has a mass of 10 Newtons

@Pressure is measured in:
Pa
N
m/s

@A turning force depends on two things. These are:
Force and distance from fulcrum
Mass and weight
Gravity and friction

@Which one of the following is a vector?
Acceleration
Distance
Resistance

@A puddle of water slowly disappears over a period of time. This is called:
Evaporation
Sublimation
Diffusion

@Which of these is in the correct order of increasing expansion rates
Solids, Liquids & Gases
Liquids, Gases & Solids
Gases, Solids & Liquids

@What can be said about the air molecules inside a fridge, compared to those in the room?
They are moving more slowly
They are colder
They are smaller

@Gamma rays are:
Electromagnetic waves
Atomic nuclei
Electrons

@Which unit is used to measure potential difference?
Volt
Ampere
Watt

@Green and Blue light when mixed together produce:
Cyan
Indigo
Magenta

@What type of wave is responsible for sun tans?
Ultra-violet
Infra-red
Gamma rays

@When we draw light rays we draw:
Straight lines with arrows on them
Arrows only
Straight lines

@The diagram shows a ray of light entering a lens from the left. Which path will it follow as it emerges on the right?
#ref4
Path v
Path u
Path t

@What is the unit of wavelength?
Metre
Hertz
Second

@What is the correct symbol for a fixed resistor
#cir3
Symbol 2
Symbol 5
Symbol 4

@Transformers are not 100% efficient because:
some energy is lost in 'Eddy currents'
the resistance of the coils is always very high
they have cores of iron

@Two strips are brought together, and the strip hung on string moves away from the other strip. This shows:
#rod
the rods must have the same charge on them
the rods have opposite charges
neither rod has a charge

@What current flows if 30 coulombs of charge are moved in 10s?
3 A
30 A
300 A

@Electrons are emitted by:
Cathode
Anode
X-plates

@A transformers secondary coil has 1A and 120V. If the primary coil has 240V, what is the current?
0.5A
1A
10A