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- @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