1) What measures the current in a circuit? a) Voltmeter b) Ammeter c) Ohmeter 2) What is the frequency of electricity in the home? a) 230V b) 2A c) 50Hz d) 60W 3) What colour is the live wire in a plug? a) Green and yellow b) Brown c) Blue 4) What colour is the Earth wire in a plug? a) Green and yellow b) Brown c) Blue 5) What colour is the neutral wire in plug? a) Green and yellow b) Brown c) Blue 6) What happens to the fuse if too much current passes through? a) breaks b) explodes c) melts 7) Which of the following would you expect to use the highest amount of power? a) Toaster b) computer c) Tv 8) What is the power of a device measured in? a) Volts b) Amps c) Ohms d) Watts 9) Which of the following magnets would attract? a) North - North b) South - South c) North - South 10) What do we call it when two magnet poles will not go together, even if we try to push them together? a) attract b) reject c) repel d) push 11) What do we need to make an electromagnet? a) Iron core b) Wire c) Power supply d) paperclip 12) What kind of wave is water an example of? a) Longitudinal b) Transverse 13) What does label B show on the diagram? a) Amplitude b) Wavelength c) Equilibrium 14) What kind of electromagnetic radiation is missing in this list... Radiowaves, microwaves, infra-red radiation, ultra-violet, x-rays, gamma rays? a) ultra-violet light b) visible light c) infra-red light 15) Which type of electromagnetic radiation has the longest wavelength? a) microwaves b) radio waves c) gamma rays d) infra-red

physics revision

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