Question: If a two-way switch is not always able to operate lights when it is in the correct position, what is the most likely cause? a)

If a two-way switch is not always able to operate lights when it is in the correct position, what is the most likely cause? a) Polarity is incorrect at the ceiling rose b) The earth cable is disconnected c) There is a faulty lamp d) Strapper and common are incorrectly connected

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