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An Investigation of the Chemical Behaviour of a Light bulb Filament I will plan to see if there is a relationship between the current, the potential difference, the resistance and the temperature of a light bulb filament. Safety:- The Current- This is not a major problem as the current is so small that it will not harm anyone if you come into contact with it. Heat- By this I mean the heat which will be produced by the light bulb. Again this will not be a problem as the hot part of the bulb is the filament which is protect by a glass dome. Breakage's- This is almost solely based upon the possible breakage of the light bulb's glass dome. This should not cause any problems as most bulbs produce a rounded edge if the glass break. My Equipment:- 1 0.3amp bulb 3 3.5volt batteries 1 Variable resistor 1 Ammeter 1 Voltmeter (I will also need 6 double ended crocodile clip...

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