... current will flow. The lamps resist the current, so if you put more lamps into the circuit there is more resistance. As the resistance of the variable resistor decreases the current in the circuit increases until the bulb burns out. The filament of a bulb is a very thin wire and acts as an electrical resistance. When the current flows, electrical energy is converted into heat and light energy. Safety:~ I need to ensure the safety of myself and others by making sure that the experiment is conducted accurately and safely. To do this I must ensure the following- Apparatus should be placed in a safe place and put away safely. Electrical plugs should be switched off after use. The area around where I am performing my experiment should be kept dry and nearby taps should be switched off. Fair Test:~ To make this investigation a fair test I will use the same type ...

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