A coil of Nichrome wire is $29\mathrm{.}0m$ long. The wire has a diameter of $0\mathrm{.}460mm$ and is at $20\mathrm{.}0C.$

$($a$)$ If it carries a current of $0\mathrm{.}480A,$ what is the magnitude of the electric field in the wire?

$0.$

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$($b$)$ If it carries a current of $0\mathrm{.}480A,$ what is the power delivered to it$?$

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$($c$)$ If the temperature is increased to $400C$ and the potential difference across the wire remains constant, what is the power delivered?

$53\mathrm{.}56$

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