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You are to investigate the factors that affect the current through a light bulb.
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| Submitted: Thu Jul 11 2002
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You are to investigate the factors that affect the current through a light bulb. Introduction: My theory of current is that it is the rate at which charge flows around a circuit. Current (I) = Charge flowing (Q) Time (T) Current (I) = Power (P) Potential Difference (V) Factors that affect current are: Voltage or 'The potential difference' Resistance Amount of charge flowing Time The length/thickness of the wire Electrical circuits: An electrical cell has two terminals. The chemical reaction the cell makes the negative terminal electron rich and the positive terminal electron short. If the terminals are joined by a piece of conducting wire to make a circuit, then electrons flow between them. The electrons flow from the negative terminal to the positive terminal. This is called the electron current. A conventional current, which is thought of as flowing from the positive to the negative has been used for many years. Since it flows from the positive to the negative: The...
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