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[" A wire of resistance "5" ohm is "1" p...

[" A wire of resistance "5" ohm is "1" point "],[" drawn out so that its length is "],[" increased to twice its original "],[" length.The value of new "],[" resistance is "^(*)]

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(i) A piece of wire of resistance 10 ohm is drawn out so that its length is increased to three times its original length. Calculate the new resistance. (ii) What is co-efficient of cubical expansion?