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The length of a wire is doubled and its ...

The length of a wire is doubled and its cross sectional area is also doubled. What is the change in its resistivity?

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There is no charge because resistivity of a material depends only on its nature.
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U-LIKE SERIES-ELECTRICITY -VERY SHORT ANSWER QUESTIONS
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  2. Keeping the potential difference constant, the resistance of an electr...

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  4. What is electrical resistivity? What is SI unit?

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  5. On what factors does the resistance of a conductor depend?

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  6. On what factors does the resistance of a conductor depend?

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  10. What happens to the resistance of a conductor when the length of the c...

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  11. What happens to resistance of a conductor when its temperature is incr...

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  12. In which arrangement, series on parallel, are various electrical devic...

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  13. How does the resistance of a wire depend on its radius?

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  14. A given length of a wire is doubled on itself. By what factors does th...

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  15. What is the effective resistance in the given circuit?

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  16. Draw a schematic diagram of an electric circuit consisting of a batter...

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  17. Name a instrument /device used to measure electric current in a circui...

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  18. How is an ammeter connected in a circuit to measure current flowing th...

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  19. What is a voltmeter?

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