An $8\mathrm{.}0-$mm$-$diameter, $25-$mm$-$long cylindrical spaceship needs to have an internal magnetic field with the same strength as earth's. A clever astronaut suggests wrapping the spaceship tightly with $1\mathrm{.}7-$mmmm$-$diameter wire, then using the spaceship's antimatter generator to drive a current through the coil.

Part A

How much current will be needed?

Express your answer with the appropriate units.

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II $=$

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