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Next, I will set the power pack on the lowest voltage possible to ensure that the current passing through the circuit isn't too high which could potentially affect the results because the wire would get too hot. I will place one crocodile clip at 0cm on the wire and the other at 5cm to complete the circuit.
I will then turn the power pack on and record what voltmeter and ammeter readings. I will switch off the power pack, move the crocodile clip that was at 5cm up to 10cm, and switch on the power pack. Again, I will record the voltmeter and ammeter readings and turn off the power pack.
I will repeat this method every 5cm until I get up to cm, taking three readings from both the voltmeter and ammeter each time to ensure accuracy. Apparatus Ensuring Accuracy To ensure accuracy I will record Physic coursework gcse voltage and the current three times every 5cm and take the average reading.
This will reduce the chance of false readings and will cancel out any anomalous results. I will also ensure that the wire does not heat up too much by confirming that I do not set the voltage too high on the power pack and by maintaining the same the voltage for every reading.
In addition, I will make sure I turn the power pack off after each reading. I will try to make this investigation as accurate as possible. Variables There are different variables that can be changed in this experiment; these are the independent variable.
However, due to my line of enquiry, I will only change the length of the wire. The variables I will control will be the type of wire resistivity and the cross-sectional area of the wire. I will also control, using the power pack, how many volts pass through the wire. Below is a table illustrating the effect of changing the variables see Table 2: Variables Safety I will ensure experimental safety by confirming that all the wires are connected properly and that none of the insulation on the wires is worn.
I will also ensure that there is a clear indication that the power is isolated by means of a switch and an L. I will stand up during the investigation to ensure that I do not injure myself if something breaks. Results Below is a table of my results Table 3.
I have taken three reading and have worked out the average, shown in red. This confirms the first part of my prediction: In addition, my prediction that doubling the length of the wire increases the resistance by a factor of two is correct see Table 4.
Graph Graphing these results shows a nearly straight line, illustrating a strong positive correlation between length and resistance, which is consistent with my prediction. Discussion Overall, my results are very consistent with my predictions.
Most of the data points were on, or very close to, the line of best fit.
There are a few data points that are farther away from the line of best fit than the others, but they are still consistent with the general trend. There are no anomalous results that I would consider to be far away from the line of best fit.
There are possible sources of error that might have led to inconsistent results, such as a kink in the wire.A BBC Bitesize secondary school revision resource for Higher Physics on the gas laws: pressure and volume of a gas, Boyle's law, pressure, temperature.
I achieved a 9 in Biology, an 8 in Chemistry and a 7 in Physics which really surprised all my teachers as I got all 5s in my mocks! And it was all thanks to My GCSE Science which helped me soooooooo much.
The subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms. Physics is a relatively logical science that requires minimal memorization, at least at IGCSE level.
A-Level Physics Course at Varndean College Grade 6 in GCSE Physics and another Science GCSE OR 2 x Grade 6 in GCSE Combined Science PLUS Grade 6 in GCSE Maths Students may also need to attend additional Maths support class, as required.
CAREER PATHWAYS. BBC Bitesize – GCSE Physics (Single Science) – Practical skills could have been nbsp; BBC Bitesize – GCSE Science – Biology is the study of living organisms and their structure, life-cycles, Physics is the study of energy, forces, mechanics, waves, and the structure of nbsp; BBC Bitesize – GCSE Physics (Single Science) – Specific heat capacity.
To determine the specific heat capacity of a metal block.
Who has done NEA Computer Science Coursework? · 5 comments. Revision Resources AQA Physics June Past Papers and Mark Scheme (P1,P2,P3) submitted 2 years ago by ArosHD. Section Past Paper Mark Scheme; P1: Link: So far coming from an A in GCSE Maths it's not too bad, Got an A in my recent S2 test so it's fine so far.