Thus the resistivity of copper is 1 7 x 10 8 ohm metre Sample Problem...

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Thus the resistivity of copper is 1 7 x 10 8 ohm metre Sample Problem 2 A copper wire has a diameter of 0 5 mm and resistivity of 1 6 10 8 2 m a What will be the length of this wire to make its resistance 10 22 b How much does the resistance change if the diameter is doubled NCERT Book Questi will calculate the area of cross section of the copper wire Here the diame

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