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Back to category: Science Limited version - please login or register to view the entire paper. Testing the theory that increasing the length of a piece of wire increases the resistance. Aim: My aim in this experiment is to investigate how the electrical resistance of a wire is affected in relationship to the length of that wire Factors affecting resistance these include: · Diameter or thickness of wire · Temperature at which wire is kept · The material from which the wire is made. · The length of the wire In my experiment I will only be investigating one factor which is the length of the wire. The wire I am using is made out of nichrome. Background information: Resistance controls the amount of current flowing through a particular component in a circuit. Resistance slows down the current. Current is defined as the rate of flow of electrons through a circuit current is measured in amps. A circuit can only possess a current if there is a voltage across a component. The voltage is the force that is exerted onto the electrons to allow them to flow through the circuit. In 1826 a German physicist called George Ohm discovered a new rule which said t... Posted by: Justin Rech Limited version - please login or register to view the entire paper. |
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