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A copper wire has diameter 0.5 mm, and r...

A copper wire has diameter 0.5 mm, and resistivity of `1.6xx10^-8 ohm -m`. What will be the length of this make its resistance `10 ohm`? How much does the resistance change if the diameter is doubled.

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A copper wire has diameter 0.5 mm and resistivity of 1.6 xx 10^(-8) Omega m . What will be the length of this wire to make its resistance 10 Omega ? How much does the resistance change if the diameter is doubled?

A copper wire has diameter 0.5 mm and resistivity of 1.6xx10^(-8) How much dows the resistence change if the diameter is doubled?

Knowledge Check

  • A wire has a resistance 10Omega . It is stretched by one - tenth of its original length .Then , its resistance will be :

    A
    `10Omega`
    B
    `12.1Omega`
    C
    `9Omega`
    D
    `11Omega`.
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