Revision of Electrical Circuits
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Positive against Positive | Attract
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| Negative against Negative | Repel
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| Positive against Positive | Repel
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| A material such as all metals that let current through are called? | Conductors
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| A material that does'nt let current through such as wood, plastic or rubber what are they called? | Insulators
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| What is resistence? | Resistance is something that makes it harder for the current to flow
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| What 3 things increase resistance? | 1)Longer lenght of wire2)Thinner lenght of wire 3)Obstacles such as bulbs,buzzers,motors etc
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| What 3 things decrease resistance? | 1)Shorter wire 2)Wider wire 3)Less obstacles such as bulbs,motors,buzzers etc
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| Name 2 ways in which we use resistance in everyday life | 1) To increase and decrease volume on a CD player 2)To increase or decrease light
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| A cell | 1 battery but don't call it that
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| A battery | 2 or more cells
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| How many volts approximately is mains electricity? | 240 volts
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| Fuses | Fuses stop the current getting to great.The wire breaks if it goes over the ... A Fuse
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| What is the series circuit? | The battery in a series circuit gives off a certain amount of energy that then get's split equally around the circuit.So by adding 1 more bulb it would divide the energy by 2
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| What is the parallel circuit? | When the battery in the parallel circuit gives off energythen however many bulbs you add they would get the same amount as the 1 bulb that started coz the battery gives out as much energy as needed.You can also turn off one bulb at a time which is useful.
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| Bulb | Light
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| Switch | Switch
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| Cell | Less than a battery
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| Battery | More than a cell
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| Ammeter | Measures amps
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| Voltmeter | Measures volts
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| Connecting wire | wire
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| Two ways switch | Can follow one or another routes
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| Fuse | Stops wire from exploding from the heat
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| Buzzer | Buzzes
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| Motor | Uses electricity to make things happen
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| Current/Amps | Current is how much electrical charge is in the circuit.It is measured in amps
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| Voltage | Voltage measures the difference in electrical energy around the circuit.You use it in parallel
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