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Question

The diagram shows an extra lamp wired into an existing 220 V A.C. lighting system. To operate extra lamp independently a switch should be placed at.
810360_2758cfdab1a448db871e46efbd21ba4b.png

A
1
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2
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C
3
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D
4
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Solution

The correct option is D 3
As the wire passing through is connected to the live (red) wire of the 220V AC lighting system, the switch should be placed there in order to regulate the current to be flown through the extra lamp.

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