K.C.S.E Physics Q & A - MODEL 2006PP2QN21
​(a) Figure 12 shows a section of a house wiring system
(i) Name:
The circuit labeled P The terminals labeled X and Y X Y II Give a reason why R is connected to Y but not to X (ii) Why is the earthing necessary in such a circuit? (b) Determine the cost of using an electric iron rated 1500W, for a total of 30 hours given that the cost of electricity per kWh is Kshs 8.
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