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In a certain circuit, an elecuical fuse melts once the current in it exceeds 4.0 A, at which instance the current density of the cylindrical

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In a certain circuit, an elecuical fuse melts once the current in it exceeds 4.0 A, at which instance the current density of the cylindrical fuse wire is 620 A/cmz. What is the diameter of the wire in the fuse? A. 0.45 mm ' ' B. 0.045 mm / C~0.91 mm '7 00.63 mm E. 1.82mm

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