New values of the length andthe new cross sectional area

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A potential difference V is applied to a wire of cross-section area of 1 unit, length 1 unit, and conductivityσ. You want to change the applied potential differenceand draw out the wire so the power dissipated is increased bya factor of 30 and the current is increased by a factor of 4 . What should be the new values of the length andthe new cross sectional area?

Reference no: EM13649353

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