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[" 20.If voltage across a bulb rated "22...

[" 20.If voltage across a bulb rated "220" Volt - "100" Watt "],[" draps by "2.5%" of its rated value,the percentage "],[" of the rated value by which the power would "],[" decrease is: "],[[" a."20^(@)" ,"," b."25^(@)" be "," e."5%," (2012Pre) "]]

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