18. Analysing, explaining Circuit diagram A is the same as for Circuit 1 in Fig. E4.6. (The extra line between the two cells is unnecessary but not wrong). Circuit B is different as the light bulb is situated between the two cells.
Mains electricity Supply a lot of electrical energy Can give us an electric shock Appliances, usually portable Generated in power stations Electric cells Supply only a small amount of energy Safe to touch Appliances need to be plugged into a mains socket Generated from chemicals in the cells
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