Determine how many turns of wire are needed

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The resistance of a very fine aluminum wire with a 20.0um* 20.0um square cross section is 1000 ohms.

A) how long is the wire?

B) A 1000 ohm resistor is made by wrapping this wire in a spiral around a 4.00 mm-diameter glass core. How many turns of wire are needed?

Reference no: EM13529915

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