Answer:
0.04594 cm
Explanation:
So, we need the wire melt when the max current density its . Now, we got our limit current, 0.58 A.
The current density its , so, with our data, we can obtain the cross area of the wire.
For a cylinder, the area its given by:
We can put all this in the equation for the max current density:
And now, we can work it a little:
using our values, max current density = , and limit current = 0.58 A,
And, of course, the diameter its two times the radius:
