A copper wire has a diameter of 0.5 m and activity of 1.6 into 10 to the power minus 8 ohm metre a. what will be the length of this wire to make its resistance 10 ohm. b.how much does the resistance change if the diameter is doubled
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Here is your answer of this question .Please donot mind I HAVE LESS TIME.
the resistance of a wire is inversely proportional to the square of its diameter.
So, when the diameter of the wire is doubled and resistance becomes1 / 4
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