A certain fuse "blows" if the current in it exceeds 1.0 A, at which instant the fuse melts with a current density of 620 A/cm². What is the diameter of the wire in the fuse? A) 0.45 mm B) 0.63 mm C) 0.68 mm D) 0.91 mm

Name: A certain fuse "blows" if the current in it exceeds 1.0 A, at which instant the fuse melts with a current density of 620 A/cm 2 . What is the diameter of the wire in the fuse? A) 0.45 mm B) 0.63 mm C) 0.68 mm D) 0.91 mm
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The Answer is A

A Certain Fuse "Blows" If the Current in It Exceeds