Question | Answer |
Positive against Positive | Attract |
Negative against Negative | Repel |
Positive against Positive | Repel |
A material such as all metals that let current through are called? | Conductors |
A material that does'nt let current through such as wood, plastic or rubber what are they called? | Insulators |
What is resistence? | Resistance is something that makes it harder for the current to flow |
What 3 things increase resistance? | 1)Longer lenght of wire2)Thinner lenght of wire 3)Obstacles such as bulbs,buzzers,motors etc |
What 3 things decrease resistance? | 1)Shorter wire 2)Wider wire 3)Less obstacles such as bulbs,motors,buzzers etc |
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 |
A cell | 1 battery but don't call it that |
A battery | 2 or more cells |
How many volts approximately is mains electricity? | 240 volts |
Fuses | Fuses stop the current getting to great.The wire breaks if it goes over the ... A Fuse |
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 |
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. |
Bulb | Light |
Switch | Switch |
Cell | Less than a battery |
Battery | More than a cell |
Ammeter | Measures amps |
Voltmeter | Measures volts |
Connecting wire | wire |
Two ways switch | Can follow one or another routes |
Fuse | Stops wire from exploding from the heat |
Buzzer | Buzzes |
Motor | Uses electricity to make things happen |
Current/Amps | Current is how much electrical charge is in the circuit.It is measured in amps |
Voltage | Voltage measures the difference in electrical energy around the circuit.You use it in parallel |