Test
Electricity
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (53)
1What do we call the two ends of a cell?
- APositive terminal
- BNegative terminal
- CPlus side
- DMinus side
- EThe pointy end
- FThe flat end
2Lable this circuit:
- ACell
- Bwires
- CLight bulb
- DSwitch
- EBuzzer
- FCells
3What does this symbol represent?
- AA cell
- BA buzzer
- CA light bulb
- DA switch
- EWires
- FTwo cells
4What does this symbol represent?
- AA light bulb
- BA cell
- CWires
- DA buzzer
- EA switch
- FTwo cells
5What does this symbol represent?
- AA switch
- BA cell
- CWires
- DA light bulb.
- ECells
6What does this symbol represent?
- AA buzzer
- BA light bulb
- CA cell
- DWires
- ECells
7What does this symbol represent?
- AA switch
- BA cell
- CA light bulb
- DWires
- ECells
8What does this symbol represent?
- ACells
- BA switch
- CA light bulb
- DA buzzer
- EWires
9In which of the following diagrams is the buzzer connected correctly to the cells?
- A
- B
- C
- A
10In which of these diagrams will the bulbs shine brightest?
- A
- B
- C
- D
- A
11In which of these diagrams will the buzzer sound the loudest?
- A
- B
- C
- A
12Will this buzzer make a sound?
- AYes
- BNo
13Will these light bulbs light up?
- AYes
- BNo
14Electricity can flow in many directions.
- AVerdadero
- BFalso
15Electricity only flows in one direction.
- AVerdadero
- BFalso
16The flow of electricity is called...
- AElectrical current
- BElectrical stream
- CElectrical river
17What is electricity?
- AAn energy that is used to power electrical items.
- BAn energy that is used to power steam trains.
- CAn energy that is used to power solar gysers.
18What creates elecrtical current?
- AThe flow of electrons.
- BCells
- CMains electricity
- DWires
19What are electrons?
- AParticles in an atom.
- BParticles in a cell.
- CParticles in a light bulb.
20What does an electrical current need in order to flow?
- AA continuous path.
- BA cell.
- CWires
21What do we call a continuous path along which electricity can flow?
- AA complete circuit.
- BA racing circuit.
- CA clean circuit.
- DA round circuit.
22A cell is also known as a battery.
- AVerdadero
- BFalso
23What is a cell?
- AA container that stores energy until it is needed.
- BA container that makes energy.
- CA container that provides energy.
24What do cells have inside them that allows the storage of energy?
- AHarmful chemicals/ acid.
- BElectrons
- CMetal
- DWater
25How must cells be arranged in order for the current to flow?
- A[+-][+-]
- B[+-][-+]
- C[-+][+-]
26Current in a cell flows...
- Afrom the positive to the negative terminal.
- Bfrom the negative to the positive terminal.
- Cfrom the positive to the positive terminal.
27Components are...
- Athe basic parts of a circuit.
- Bthe basic parts of a cell.
- Cthe basic parts of an electrtical current.
28What will happen if I disconnect the wire from the bulb in this diagram?
- AThe bulb will go off.
- BThe bulb will shine brighter.
- CNothing.
29What happens when you turn on a light switch?
- AIt closes the cicuit and the light shines.
- BIt breaks the circuit and the light goes off.
- CIt breaks the circuit and the light goes on.
30What happens when you turn a light switch off?
- AIt breaks the current and the light goes off.
- BIt breaks the current and the light goes on.
- CIt closes the circuit and the light goes on.
31A switch [blank_start]controls[blank_end] the electrical [blank_start]current[blank_end], it turns it on and off.
- Acontrols
- Bcurrent
32This circuit has two 1.5V cells and two 1.5V light bulbs. Why not use one cell?
- AOne cell would not porvide enough energy.
- BYou always need one cell for every light bulb.
- CCells are sonld in packs of two.
33What would happen if I removed one of the bulbs in the circuit.
- AThe two remaining bulbs would shine brighter.
- BThe two remaining bulbs would shine dimly.
- CThe two remaining bulbs would not shine at all.
34What is a buzzer?
- AAn electrical component that produces sound.
- BAn electrical component that produces light.
- CAn electrical component that provides energy.
35Buzzers require...
- Amore energy than light bulbs.
- Bless energy than light bulbs.
- Cthe same amount of energy as light bulbs.
36Energy is measured in [blank_start]volts[blank_end] ([blank_start]V[blank_end]).
- Avolts
- BV
37Voltage refers to...
- Athe amount of electricity flowing through a wire.
- Bthe strenght of electricity that a component needs.
- Cthe amount of wire neede for a circuit.
- Dthe strength of a wire in a circuit.
38The amount of cells needed in a circuit is determined by...
- Athe voltage required by the other components in the circuit.
- Bthe voltage of the cells.
- Cthe amount of other components in the circuit.
- Dthe number of switches in the circuit.
39How many 1.5V cells will I need to power a 4.5V bell?
- A3 cells
- B4 cells
- C5 cells
40Why can batteries only power small electric devices?
- ABecause they can only store small amounts of energy.
- BBecause they only fit into small electric devices.
- CBecause it would be too expensive to power big electronic equipment with batteries.
41What do most homes use to run their electric appliances?
- AMains electricity.
- BBattereies.
- CSolar power.
42In order for appliances to run off mains electricity...
- Athey need to be plugged into a wall socket.
- Bthey need battteries.
- Cthey need to be connected to the internet.
43Where does mains electricity come from?
- APower plants.
- BBatteries.
- CSolar panels.
- DWall sockets.
44Mains electricity is weaker than batteries.
- AVerdadero
- BFalso
45Mains electricity uses high voltages of over 100V.
- AVerdadero
- BFalso
46All countries use the same voltage for mains electricity.
- AVerdadero
- BFalso
47Why can mains electricity be dangerous?
- ABecause of the high voltage.
- BBecause we can not control it.
- CBecause it travels very fast.
48What can be the result of not using mains electricity carefully and properly?
- AElectric shock.
- BFire.
- CElectric appliences not working.
- DLoad shedding.
49Sticking your [blank_start]fingers[blank_end] or [blank_start]metal[blank_end] objects into wall sockets can cause electric shock.
- Afingers
- Bmetal
50Using electric appliances when your hands are [blank_start]wet[blank_end] can cause electric [blank_start]shock[blank_end].
- Awet
- Bshock
51[blank_start]Water[blank_end] and [blank_start]electricity[blank_end] should be kept away from each other.
- AWater
- Belectricity
52If you plug too many appliances into a wall socket, it can [blank_start]overload[blank_end] and cause a [blank_start]fire[blank_end].
- Aoverload
- Bfire
533 things to remember when building a circuit:
- ASimple circuits are made up of components.
- BThe metal part of the wire should be connected to the metal part of the component.
- CAll components in a cicuit need to be carefully connected to allow the current to flow.
- DMains electricity can be dangerous.
- EBuzzers produce sound.
- FCells can also be called batteries.
- GSwitches are components in a circuit.
Información
- Descripción
- Icons made by Freepik from www.flaticon.com Icons made by Vectors Market from www.flaticon.com Icons made by Smashicons from www.flaticon.com
- Autor
- Liesl Marais
- Idioma
- English
- Visitas
- 5
- Etiquetas
- Valoración
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