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Temperature change

Investigation of energy changes in a displacement reaction Introduction The theory that I am looking at is that: ‘A more reactive metal will displace a less reactive metal from a compound’ The reaction that I will be looking at is zinc replacing copper. This happens, as zinc is higher inRead More

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Nichrome and constantan

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. Resistance is measured in ohms. During this experiment I aim to research and plan an experiment to investigate a factor thatRead More

The thickness of the wire

To investigate factors affecting the resistance of a wire. There are a plenty of things I can alter which will change the resistance of a wire such as the voltage/ length of the wire, the thickness of the wire and the temperature of the wire. Most of these are quiteRead More

Average and also plot a graph

Plan: In my investigation I will be finding out necessary factors that affect resistance in a wire. To do this I will be looking at different lengths of wire, different thickness and different materials. The three materials we will be using are Copper, Nichrome and Constantin. In the investigation IRead More

The current passing through

An electrical conductor is a substance through which electrical current flows with little resistance. Electricity is passed through a conductor, in this case a length of wire, by means of free electrons. In metals the atoms are arranged in a regular crystal lattice, and so the electrons in the outerRead More

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