Test
U10 Electric Circuits Quiz
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Preguntas del test (18)
1Which of these statements is true?
- AA) Plastic is a conductor because it lets electricity flow through it.
- BB) Plastic is an insulator because it lets electricity flow through it.
- CC) Metals are conductors because they let electricity flow through them.
- DD) Metals are insulators because they let electricity flow through them.
2What do these symbols show?
- AA) a cell and a bulb
- BB) a cell and a switch
- CC) a bulb and a switch
- DD a switch and a motor
3Which instrument would you use to measure electric current?
- AA) an ammeter
- BB) a cell
- CC) a motor
- DD) a voltmeter
4How big would the current be at X, Y and Z?
- AA) It would be biggest at X and smallest at Z. .
- BB) It would be biggest at Z and smallest at X
- CC) There would be no current at Y.
- DD) It would be the same at all three places.
5You can make the current in a circuit smaller by:
- AA) putting a switch in the circuit.
- BB) putting more bulbs in the circuit.
- CC) taking some bulbs out of the circuit.
- DD) putting more cells in the circuit.
6" Resistance" is a way of saying:
- AA) how much electricity is flowing.
- BB) how hard it is for electricity to flow.
- CC) how many cells are in a circuit.
- DD) how many switches are in a circuit.
7 Electricity is:
- AA) a source of energy.
- BB) a kind of liquid inside the wires.
- CC) tiny particles called electrons flowing through the wires.
- DD) tiny particles called atoms flowing through the wires.
8A long wire:
- AA) has a smaller resistance than a short wire.
- BB) has the same resistance as a short wire.
- CC) has a bigger resistance than a short wire.
- DD) does not have resistance.
9Which of these circuits are parallel circuits?
- AA) X and Y only
- BB) X and Z only
- CC) Y and Z only
- DD) all of them
10Which switches must be pressed to make bulb X come on?
- AA) 1 and 2 only
- BB) 1 and 3 only
- CC) 2 and 3 only
- DD) all three of them
11Parallel circuits are used for house lights:
- AA) so they can all be switched on and off together.
- BB) so you know when one breaks, because all the others go off
- CC) so they use a bigger current.
- DD) so they can all be switched on and off separately.
12 Which of the statements about this circuit can not be true?
- AA) The currents at Q and R add up to give the current at S.
- BB) The current is the same at P and S.
- CC) The current is the same at Q and R.
- DD) The current is the same at P and Q
13 When electricity flows through wires:
- AA) they melt.
- BB) they get cold.
- CC) they get hot.
- DD) nothing changes.
14 A fuse is:
- AA) a metal strip that bends when it is hot
- BB) a piece of wire that melts when it gets too hot.
- CC) a piece of plastic that does not let electricity through.
- DD) the part of a plug that sticks into a socket.
15An electric heater has a current of 10 A flowing through it.
Which fuse should be used?- AA) 3 A
- BB) 5 A
- CC) 13 A
- DD) 30 A
16A fuse is used to:
- AA) heat things.
- BB) make things move.
- CC) control the temperature of something.
- DD) stop electricity flowing if something is wrong.
17If you touch electrical equipment with wet hands:
- AA) you might damage the equipment.
- BB) you could get an electrical shock
- CC) you might get your hands dirty.
- DD) you might make the equipment dirty.
18What happens if a large electrical current flows through your body?
- AA) Your heart could stop working.
- BB) Your eyeballs could explode.
- CC) Nothing at all.
- DD) It will improve your circulation.
Información
- Descripción
- Quiz for KS3 Electric Circuits topic.
- Autor
- Jeffrey Piggott
- Idioma
- English
- Visitas
- 201
- Etiquetas
- Valoración
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