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An investigation into the characteristics of a filament bulb Essay

I will set the voltage at the certain voltages and I will repeat the experiment twice. This will give me a set of results to compare my originals to. When performing this experiment I must carry out a few safety procedures. I must make sure I do not overpower the bulb as it could break. I must not leave my wires dangling as this is a safety hazard. I must try and work away from other experiments as this will give me more space to work on and minimise hazards to the other experimenters in the room. I would predict that as the voltage goes up so do the readings on the ammeter and voltmeter.

There will be a positive strong line on a line graph that would rise rapidly but as the voltage is increased, the curve will flatten out. To make the experiment as fair as possible I will use the same filament bulb and other materials throughout the experiment. Most of the factors however cannot be controlled. This includes the wire resistance which we cannot change or tell if it is bad or good. Temperature will also affect the resistance of the wire very slightly. However slight this is it is still a factor which would determine my results.

This can be controlled to a certain extent by performing the experiment all at the same time when the temperature changes will be very slight. Volts Test 1 Test 1 Test 2 Test 3 Ammeter Voltmeter Ammeter Voltmeter.

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