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====Description====
The [[IV Graph]] for a '''bulb''' shows that:
*As [[Potential Difference|potential difference]] increases, [[Electrical Current|increasescurrent]]increases.
*At small [[Potential Difference|potential differences]]] the the relationship between [[Potential Difference|potential difference]] and [[Electrical Current|current]] is [[linear]] (the [[gradient]] is constant).
*At large [[Potential Difference|potential differences]] the [[gradient]] becomes more shallow as the [[Electrical Resistance|resistance]] of the '''bulb''' increases.