Physics, 06.12.2019 09:31 lagarde

The resistance of a metal wire of length 1 meter is 2 ohm at 20 degree. if the diameter of the wire is 0.3 mm, what will be the resistivity of the wire at that temp. how much does the resistance change if the diameter is doubled

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The resistance of a metal wire of length 1 meter is 2 ohm at 20 degree. if the diameter of the wire...