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Physics Course work Paris Wells Background What is resistance Resistance is a substance of resisting the flow of an electrical current. The quantity of resistance in an electric circuit. It controls the amount of current flowing in the circuit. The unit of resistance is the ohm. The standard abbreviation for electric resistance is R . The electrical calculation which is used to find out resistance The resistance of an object is determined by the length and the circular area of the object (width ), and by the temperature and material. The resistance is proportional to the object's length, and inversely proportional to its circular area of the object (width ). A material's resistance increases with increases in temperature. Ohms Law Resistance is measured in Ohms with a symbol. -Ohm's Law states "The current through a metallic conductor at constant temperature is proportional to the potential difference thus the potential difference / current is constant". Predictions For Hypothesis 1 ...

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