3. A uniform E of 0.8 V/m drives a 12 A current in an iron wire. Find the diameter of the wire (p of iron = 9.7 × 10-8 N – m).
3. A uniform E of 0.8 V/m drives a 12 A current in an iron wire. Find the diameter of the wire (p of iron = 9.7 × 10-8 N – m).
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Transcribed Image Text:3. A uniform E of 0.8 V/m drives a 12 A current in an iron wire. Find the diameter of the
wire (p of iron = 9.7 × 10-8 N – m).
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