Q. A) State which has higher resistance - a 50W bulb or a 25W lamp bulb an how many times?
B) A wire of length L and resistance R is stretched so that its length is doubled and area of cross section is halved.How will its : (i) resistance change?
(ii) resistivity change?
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25 watt lamp is higher resistance
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enclosed in the picture.
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tanvivasani8:
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