The Resistance Of A Wire

Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Resistance is a force which opposes the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. The circuit itself can resist the flow of particles if the wires are either very thin or very long. e.g. The filament across an electric …

…following conclusions were drawn: *<Tab/>As predicted, an increase in length resulted in an increased resistance. This can be clearly said for both wires tested. *<Tab/>The length of the wire is shown to be directly proportional to the resistance - double the length and the resistance doubles. The results of this investigation backs up my theory about the free electrons and also the bonding of metals.