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The resistance of a very fine aluminum wire with a 17?m x 17?m square cross section is 1200 ? . A 1200 ? resistor is made by wrapping this wire in a spiral around a 3.9-mm-diameter glass core. How many turns of wire are needed?
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Question: What is the potential difference across the 10 Ω resistor in the figure ? What is the potential difference across the 20 Ω resistor in the figure?
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