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The higher the resistance Essay

Aim – To see if the length of wire will affect the resistance Factors – I will be changing the length of the wire Prediction – I predict that the longer the wire the higher the resistance Fair test – To make my experiment a fair test I will: iKeep the voltage and amps the same  Keep the equipment in the same position i?? Keep the thickness of the wire the same i?? Use the same wire Apparatus – The apparatus I will be using are: i?? Lab pack Ammeter i?? Voltmeter i?? Crocodile clips i?? 1 Metre nichrome wire .

Metre ruler i?? Switch You’re Experiment – 1. Place all apparatus onto a table 2. Place apparatus as: Battery then switch then ammeter then wire then place voltmeter parallel to the wire 3. Put one crocodile clip at one end of the nichrome wire and the second 10cm away 4. Read and record the results from voltmeter and ammeter onto a table 5. Keep everything the same (voltmeter and wire) 6. Move the second crocodile clip another 10cm away from the first one 7. Record the result of the voltmeter and the ammeter on the table.

8. Repeat this four more times at 30cm, 40cm, 50cm and 60cm and record the results Diagram – Safety – Connect all the apparatus correctly make sure that everything works and nothing is faulty. Results – First Results Length(cm) Current (A) Voltage (V) Resistance (ohms) 10 3. 29 verage Resistance Length of wire (cm) Average Resistance (ohms) 1Conclusion – I found out that the longer the nichrome wire the longer the resistance. Evaluation – Erin Brennan 10CAH 09/05/2007 Show preview only The above preview is unformatted text This student written piece of work is one of many that can be found in our GCSE Electricity and Magnetism section.

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